ac_short_quiz.json

[{'text':'A resistor on an AC supply has a power of 2kW when a r.m.s. voltage of 230V is put across it. What is the r.m.s current through the resistor? ','image':'?','answer':'?','optionA':'6.4A ','optionB':'8.7A T ','optionC':'2.9A ','optionD':'4.3A '},{'text':'Why is it necessary to use root mean squared averages rather than a normal mean when dealing with AC currents? ','image':'?','answer':'?','optionA':'The r.m.s. gives a more accurate value for the mean ','optionB':'It is easier to work out r.m.s. values ','optionC':'They are the same except that r.m.s is always positive ','optionD':'The normal average is always zero '},{'text':'A resistor is connected in series to an AC supply. The peak voltage across the resistor is 11V and the peak current is 2A. Find the resistance of the resistor. ','image':'?','answer':'?','optionA':'6.5 Ohm ','optionB':'5.5 Ohm T ','optionC':'3.5 Ohm ','optionD':'4.5 Ohm '},{'text':'It is written on an AC supply that it produces an r.m.s voltage of 5V and an r.m.s current of 3A. What is the power produced by this AC supply? ','image':'?','answer':'?','optionA':'30W ','optionB':'27W ','optionC':'24W ','optionD':'15W T '},{'text':'It is written on an AC supply that it produces an r.m.s voltage of 5V and an r.m.s current of 3A. What is the peak current value for the AC supply? ','image':'?','answer':'?','optionA':'5.07A ','optionB':'4.24A T ','optionC':'2.63A ','optionD':'3.91A '},{'text':'A resistor, of resistance 4k Ohm, is connected to an AC voltage source. The largest voltage observed across the resistor is 14V. What is the power being dissipated by resistor? ','image':'?','answer':'?','optionA':'0.0749W ','optionB':'0.0971W ','optionC':'0.0245W T ','optionD':'0.0426W '},{'text':'On an oscilloscope it is measured that there are 7 oscillations in a time period of 35ms. What is the frequency of the wave? ','image':'?','answer':'?','optionA':'250Hz ','optionB':'150Hz ','optionC':'200Hz T ','optionD':'100Hz '},{'text':'A resistor on an AC supply has a power of 2kW when a r.m.s. voltage of 230V is put across it. What is its resistance? ','image':'?','answer':'?','optionA':'39 Ohms ','optionB':'17 Ohms ','optionC':'26 Ohms T ','optionD':'5 Ohms'},]

charge_and_current_short_quiz.json

[{'text':'In any circuit the total current going into a junction has to be the same as the total coming out. What conservation law is this due to? ','image':'?','answer':'?','optionA':'Charge T ','optionB':'Energy ','optionC':'Spin ','optionD':'Momentum '},{'text':'A total charge of 20C passes a point at a constant rate over a time of 5s. What would be the reading on an ammeter at that point? ','image':'?','answer':'?','optionA':'4A T ','optionB':'2A ','optionC':'3A ','optionD':'5A '},{'text':'A resistor (3kOhms) has a current passing through it of 1.67mA. How many electrons pass through the resistor in a period of half an hour? (Elementary charge = 1.60x10^-19 C) ','image':'?','answer':'?','optionA':'1.7x10^19 ','optionB':'2.2x10^19 ','optionC':'2.0x10^19 ','optionD':'1.9x10^19 T '},{'text':'What is the unit of electrical current? ','image':'?','answer':'?','optionA':'Ampere T ','optionB':'Electron volt ','optionC':'Volt ','optionD':'Coulomb '},{'text':'In metals (and graphite) what is it that carries electrical current? ','image':'?','answer':'?','optionA':'Photons ','optionB':'Electrons T ','optionC':'Ions ','optionD':'Atoms '},{'text':'A beam of electrons has a current of 5.6mA. How many electrons flow through the beam in 5 minutes? (Elementary charge = 1.60x10^-19 C) ','image':'?','answer':'?','optionA':'1.81x10^19 ','optionB':'1.05x10^19 T ','optionC':'1.54x10^19 ','optionD':'1.23x10^19 '},{'text':'Rate of flow of electric charge is ','image':'?','answer':'?','optionA':'electric current T ','optionB':'emf ','optionC':'resistance ','optionD':'voltage '},{'text':'If a current of 1 A passes through a point in 1 s then charge passes that point is ','image':'?','answer':'?','optionA':'2C ','optionB':'3C ','optionC':'1C T ','optionD':'6C'},]

cosmology_short_quiz.json

[{'text':'Define a a light year. ','image':'?','answer':'?','optionA':'The time it takes for light to travel 1 million kilometres ','optionB':'The distance to the nearest galaxy ','optionC':'The distance light travels in one year T ','optionD':'None of the above '},{'text':'The Doppler effect is given by which equation? ','image':'?','answer':'?','optionA':'E=mc^2 ','optionB':'delta lamda/lamda= v/c T ','optionC':'v=f lamda ','optionD':'lamda max T = constant '},{'text':'At what mass would a white dwarf be on its way to becoming a supernova? ','image':'?','answer':'?','optionA':'<0.1 solar mass ','optionB':'<1 solar mass ','optionC':'1 solar mass ','optionD':'1.4 solar mass T '},{'text':'How would you estimate the age of the Universe? ','image':'?','answer':'?','optionA':'1 divided by Hubbles constant T ','optionB':'The speed of light times Hubbles constant ','optionC':'1 divided by the speed of light ','optionD':'2 raised to the power of Hubbles constant '},{'text':'In the Hertzsprung-Russell diagram, how would you classify the group of stars in the bottom left, underneath the main sequence? ','image':'?','answer':'?','optionA':'Red dwarfs ','optionB':'Red giants ','optionC':'Black dwarfs ','optionD':'White dwarfs T '},{'text':'Assuming that a star is a black body, what is Stefans Law? ','image':'?','answer':'?','optionA':'P=sigma+A+T^4 ','optionB':'P=sigma A T ','optionC':'P=sigma A T^4 T ','optionD':'P=(sigma A) / T '},{'text':'What is Wiens Displacement Law? ','image':'?','answer':'?','optionA':'lamda max T = constant T ','optionB':'m - M = 5 log (d/10) ','optionC':'m-M=-2.5*log(b) ','optionD':'P = sigma A T^4 '},{'text':'What is Hubbles Law? ','image':'?','answer':'?','optionA':'v=H d T ','optionB':'v=f lamda ','optionC':'z=-v/c ','optionD':'v=H/d '},{'text':'When a star is forming, what is the most important factor in determining the type of star it will become? ','image':'?','answer':'?','optionA':'Its constituents ','optionB':'Its brightness ','optionC':'Its size ','optionD':'Its mass T '},{'text':'When white light is passed through cool gases, the spectra observed is called ','image':'?','answer':'?','optionA':'line spectra ','optionB':'continuous spectra ','optionC':'emission line spectra ','optionD':'absorption line spectra T'},]

density_quiz_short_quiz.json

[{'text':'Select the statement that displays correctly the equation and S.I. units for density. ','image':'?','answer':'?','optionA':'p = m * V. Units: [kg m^3] ','optionB':'p = m * V. Units: [kg m^-3] ','optionC':'p = m / V. Units: [kg m^3] ','optionD':'p = m / V. Units: [kg m^-3] T '},{'text':'Density is defined as mass per unit volume. Select the correct definition of unit volume when using S.I units.  ','image':'?','answer':'?','optionA':'Unit volume means 10 S.I unit. Therefore a unit volume means 10 cm^3. ','optionB':'Unit volume means 1 S.I unit. Therefore a unit volume means 1 m^3. ','optionC':'Unit volume means 1 S.I unit. Therefore a unit volume means 1 cm^3. ','optionD':'Unit volume means 10 S.I unit. Therefore a unit volume means 10 m^3. '},{'text':'Two 1 m^3 boxes (box A and box B) are standing side by side. Box A is filled with gold. Box B is filled with candyfloss. Select the correct statement: ','image':'?','answer':'?','optionA':'Box A has a lower density than Box B because it has less mass per unit volume ','optionB':'Box B has a lower density than Box A because it has more mass per unit volume ','optionC':'Box A has a higher density than Box B because it has more mass per unit volume T ','optionD':'Both boxes have the same density '},{'text':'Two light boxes (box A and box B) are standing side by side. Box A has a volume of 1 m^3. Box B has a volume of 10 m3. Box A is filled with water and has a total mass of 1000 kg. Box B is filled with water and has a total mass of 10x103 kg. Select the correct statement: ','image':'?','answer':'?','optionA':'Box A has a lower density than Box B because it has less mass per unit volume ','optionB':'Box B has a lower density than Box A because it has more mass per unit volume ','optionC':'Box A has a higher density than Box B because it has more mass per unit volume ','optionD':'Both boxes have the same density T '},{'text':'Two light boxes (box A and box B) are standing side by side. Box A has a volume of 1 m^3. Box B has a volume of 10 m^3. Box A is filled with gold and has a total mass of 19x10^3 kg. Box B is filled with water and has a total mass of 10x10^3 kg. Select the correct statement: ','image':'?','answer':'?','optionA':'Box A has a lower density than Box B because it has less mass per unit volume ','optionB':'Box B has a lower density than Box A because it has more mass per unit volume ','optionC':'Box A has a higher density than Box B because it has more mass per unit volume T ','optionD':'Both boxes have the same density '},{'text':'A brick has mass 2.2 kg and dimensions 102.5 mm x 65 mm x 215 mm.  Calculate the density of the brick. ','image':'?','answer':'?','optionA':'1.5 x 10^-6 kg m^-3 ','optionB':'3.2 x 10^6 kg m^-3 ','optionC':'1.5 x 10^3 kg m^-3 ','optionD':'3.2 x 10^-3 kg m^-3'},]

electrical_energy_short_quiz.json

[{'text':'What is the definition of voltage ? ','image':'?','answer':'?','optionA':'V = I/W ','optionB':'V = Q/W ','optionC':'V = W/Q T ','optionD':'V = W/I '},{'text':'What is the power of a 3 Ohm resistor when a potential difference of 5V is put across it? ','image':'?','answer':'?','optionA':'15W ','optionB':'25W ','optionC':'8.3W T ','optionD':'75W '},{'text':'A resistor of resistance 5 Ohms has a current of 2 Amps running through it. What is the energy dissipated by the resistor over a time of 4 seconds? ','image':'?','answer':'?','optionA':'50 J ','optionB':'40 J ','optionC':'45 J ','optionD':'80 J T '},{'text':'A light bulb of 100 percent efficiency releases 120J of light for every 5C of charge that passes through it. What is its voltage? ','image':'?','answer':'?','optionA':'600V ','optionB':'120V ','optionC':'12V ','optionD':'24V T '},{'text':'A heater has a potential difference of 24V across it and a current of 3A flowing through it. What is the total energy dissipated as heat by the heater over a period of 25 minutes? ','image':'?','answer':'?','optionA':'95 kJ ','optionB':'108 kJ T ','optionC':'83kJ ','optionD':'117kJ '},{'text':'A proton moves through a potential difference of 7V. What is the work done by the proton? (Elementary charge = 1.60x10^-19 C) ','image':'?','answer':'?','optionA':'1.25x10^-18 J ','optionB':'1.12x10^-18 J T ','optionC':'1.31x10^-18 J ','optionD':'1.03x10^-18 J '},{'text':'A light bulb of 100 percent efficiency releases 120J of light for every 5C of charge that passes through it. What is its voltage? ','image':'?','answer':'?','optionA':'24V T ','optionB':'120V ','optionC':'12V ','optionD':'600V '},{'text':'What is the voltage across a resistor (25 Ohms) if 5.4x10^19 electrons pass through it every second? (Elementary charge = 1.60x10^-19 C) ','image':'?','answer':'?','optionA':'192V ','optionB':'216V T ','optionC':'154V ','optionD':'235V '},{'text':'A bulb has a power of 4W when operated at a voltage of 12V. What is the current through the bulb when there is 12V across the bulb? ','image':'?','answer':'?','optionA':'3.0 A ','optionB':'6.1 A ','optionC':'0.33A T ','optionD':'12A '},{'text':'What is the power output of a 3O resistor when a current of 5A is flowing through it? ','image':'?','answer':'?','optionA':'75W T ','optionB':'45W ','optionC':'25W ','optionD':'95W'},]

electron_energy_levels_short_quiz.json

[{'text':'What is the term given to the fact that energy levels exist in discrete values? ','image':'?','answer':'?','optionA':'Energised. ','optionB':'Nanoscale. ','optionC':'Fixed. ','optionD':'Quantised. T '},{'text':'Energy levels in an atom are negative. Which of the following statements correctly identifies why this is the case? ','image':'?','answer':'?','optionA':'The electrons bound to the atom must gain energy energy in order to move up to a higher energy level or escape the atom, therefore we write that they have negative energy. T ','optionB':'The electrons bound to the atom must lose energy in order to move up to a higher energy level or escape the atom, therefore we write that they have negative energy. ','optionC':'The electrons bound to the atom experience a repulsive electrostatic force from the nucleus of the atom and so have a negative energy. ','optionD':'The electrons bound to the atom have a negative charge and so have a negative energy. '},{'text':'An electron is in an atom and energy is input such that the potential energy of the atom changes to 0 eV. Which of the following statements accurately describes the electron at this point? ','image':'?','answer':'?','optionA':'It is in the highest energy level of the atom. ','optionB':'It is in the ground state of the atom. ','optionC':'It is not bound to the atom. T ','optionD':'It is not moving. '},{'text':'An electron moves from an energy level at -10 eV to one at -3 eV. Which of the following is the term given to this process? ','image':'?','answer':'?','optionA':'The electron has released energy. ','optionB':'The electron has lost energy. ','optionC':'The electron has been excited. T ','optionD':'The electron has escaped. '},{'text':'Which of the following correctly defines the electronvolt? ','image':'?','answer':'?','optionA':'The electronvolt is the potential difference required to transfer 1 joule of energy to the electron. ','optionB':'The electronvolt is the amount of energy transferred to an electron when it is passed through a potential difference of one volt. T ','optionC':'The electronvolt is the amount of energy stored by an electron at rest. ','optionD':'The electronvolt is amount of charge stored by an electron. '},{'text':'An electron moves from an energy level at -1.2 eV to one at -9.2 eV. Which of the following is the term given to this process? ','image':'?','answer':'?','optionA':'The electron has gained energy. ','optionB':'The electron has been absorbed. ','optionC':'The electron has been excited. ','optionD':'The electron has been de-excited. (relaxed) T '},{'text':'An electron undergoes de-excitation within an atom. What happens to the energy it loses? ','image':'?','answer':'?','optionA':'It is absorbed by the atom. ','optionB':'It is released as a single photon. T ','optionC':'It is transferred into an increased kinetic energy of the electron ','optionD':'It is released as many photons. '},{'text':'Which of the following expressions correctly relates the energy of a photon to its wavelength? ','image':'?','answer':'?','optionA':'E = h.lambda ','optionB':'E = h.c ','optionC':'E = h.lambda / c ','optionD':'E = h.c/lambda T '},{'text':'A hydrogen atom and a magnesium atom each undergo a series of electron excitation and de-excitation. The set of photons released from hydrogen when electrons dexcite is very different to the set of photons released from magnesium. What would explain this difference? ','image':'?','answer':'?','optionA':'The hydrogen atom is at a higher temperature than the magnesium atom . ','optionB':'The hydrogen atom is at a lower temperature than the magnesium atom . ','optionC':'The hydrogen atom has fewer electrons than the magnesium atom. ','optionD':'The hydrogen and magnesium atoms have a unique set of energy levels. T'},]

emission_and_absorption_spectra_short_quiz.json

[{'text':'Which photon will cause an electron to be excited from level -3.4eV to a level -1.5eV ? ','image':'?','answer':'?','optionA':'1.9 eV T ','optionB':'3.4 eV ','optionC':'10.2 eV ','optionD':'12.1 eV '},{'text':'Which photon will be emitted when an electron falls from level -1.5eV to level -13.6eV ? ','image':'?','answer':'?','optionA':'1.9 eV ','optionB':'3.4 eV ','optionC':'10.2 eV ','optionD':'12.1 eV T '},{'text':'Absorption spectra are used to study stars. They can be used to: ','image':'?','answer':'?','optionA':'Measure how bright a star is ','optionB':'Tell us the size of the star ','optionC':'Tell us how hot the star is ','optionD':'Identify the elements within a star T '},{'text':'Identify the correct definition of path difference ','image':'?','answer':'?','optionA':'The difference in the wavelength of two waves ','optionB':'The difference in the amplitude of two waves ','optionC':'The difference in the displacement of the medium of two waves at a specific point ','optionD':'The difference in the distance travelled by two waves from their source to a specific point T '},{'text':'If n is a whole number, then two waves are in phase if they have: ','image':'?','answer':'?','optionA':'a path difference of n.lambda T ','optionB':'a path difference of (n+1/2).lambda ','optionC':'? ','optionD':'? '},{'text':'If n is a whole number, then two waves from two slits of a grating will create a bright fringe if there is: ','image':'?','answer':'?','optionA':'a path difference of n.lambda T ','optionB':'a path difference of (n+1/2).lambda ','optionC':'? ','optionD':'? '},{'text':'Use trigonometry to select the equation that represents that path difference. ','image':'?','answer':'?','optionA':'d.cos(theta) = n.lambda ','optionB':'d.tan(theta) = n.lambda ','optionC':'d.sin(theta) = n.lambda T ','optionD':'? '},{'text':'White light is incident on a diffraction grating and produces an interference pattern of bright and dark fringes on a screen placed behind the grating. Select the statement that correctly describes the bright fringes on the screen. ','image':'?','answer':'?','optionA':'Each bright fringe is white ','optionB':'Each bright fringe is a spectrum of colours with blue on the side closest to the central fringe, and red on the furthest side ','optionC':'Each bright fringe is a spectrum of colours with red on the side closest to the central fringe, and blue on the furthest side ','optionD':'The central bright fringe is white, the rest are are a spectrum of colours with blue on the side closest to the central fringe, and red on the furthest side T '},{'text':'Identify the equation for the highest order maxima ','image':'?','answer':'?','optionA':'n = lambda/d ','optionB':'n = d.sin(theta)/lambda ','optionC':'n = d/lambda T ','optionD':'n = lambda/(d.sin(theta))'},]

equations_of_uniform_motion_short_quiz.json

[{'text':'A boat is travelling at 5m/s. It accelerates at 2m/s^2 for 8 seconds. What is the boats final velocity? ','image':'?','answer':'?','optionA':'23m/s ','optionB':'16m/s ','optionC':'21m/s T ','optionD':'18m/s '},{'text':'An Olympic cyclist starts a race by accelerating uniformly from rest at 2m/s^2 for a distance of 50m. What is her velocity at the end of the 50m? ','image':'?','answer':'?','optionA':'33m/s ','optionB':'25m/s ','optionC':'14m/s ','optionD':'5m/s '},{'text':'A bullet, of mass 0.25kg, is shot in the air at an initial velocity of 50m/s. Ignoring air resistance find the height which the bullet reaches ','image':'?','answer':'?','optionA':'127m T ','optionB':'145m ','optionC':'113m ','optionD':'132m '},{'text':'An Olympic cyclist starts a race by accelerating uniformly from rest at 2m/s^2. Once the cyclist has reached 20m/s she reduces her acceleration to 0.5m/s^2. She carries on at this acceleration rate for 15 seconds. How far has she gone since reaching 20m/s? ','image':'?','answer':'?','optionA':'356m T ','optionB':'429m ','optionC':'758m ','optionD':'517m '},{'text':'There is a large accident in front of a cyclist so she is forced to use her brakes. For her to be able to avoid the accident she must reduce her speed from 50m/s to 10m/s. This takes her 4 seconds. Calculate the magnitude of her deceleration. ','image':'?','answer':'?','optionA':'14m/s^2 ','optionB':'20m/s^2 ','optionC':'10m/s^2 ','optionD':'5m/s^2 '},{'text':'A tennis ball is travelling at 5m/s when it hits a tennis racket where it is accelerated in the opposite direction at 360m/s^2 for 0.1s. What is the balls final speed? ','image':'?','answer':'?','optionA':'26m/s ','optionB':'31m/s T ','optionC':'9m/s ','optionD':'15m/s '},{'text':'A lorry accelerates uniformly from 2m/s to 10m/s over 300m. How much time does it take for the lorry to travel the 300m? ','image':'?','answer':'?','optionA':'30s ','optionB':'70s ','optionC':'90s ','optionD':'50s T '},{'text':'How much time does it take a skydiver jumping from a plane to reach 30m/s? (ignore air resistance) ','image':'?','answer':'?','optionA':'4.97s ','optionB':'2.51s ','optionC':'2.66s ','optionD':'3.06s T '},{'text':'A runner accelerates from 0 to 15m/s in 5 seconds and then remains at a constant speed. What is his acceleration for the first 5 seconds of the race? ','image':'?','answer':'?','optionA':'1m/s^2 ','optionB':'3m/s^2 T ','optionC':'4m/s^2 ','optionD':'5m/s^2 '},{'text':'What does the gradient of a velocity-time graph represent? ','image':'?','answer':'?','optionA':'Acceleration T ','optionB':'Distance Travelled ','optionC':'Velocity ','optionD':'Force '},{'text':'What does the gradient of a displacement-time graph represent? ','image':'?','answer':'?','optionA':'Force ','optionB':'Momentum ','optionC':'Velocity T ','optionD':'Acceleration '},{'text':'A skydiver jumps from a plane at height 5,000m. At what speed is he falling when he reaches 1,000m? Air resistance may be neglected. ','image':'?','answer':'?','optionA':'350m/s ','optionB':'200m/s ','optionC':'140m/s ','optionD':'280m/s T'},]

equilibrium_quiz_short_quiz.json

[{'text':'Consider an irregular piece of cardboard in a non-uniform gravitational field. We can hang the cardboard from a point and then use a plumb line to draw a vertical line. Select the correct statement: ','image':'?','answer':'?','optionA':'We can draw a horizontal line on the cardboard using a spirit level and the point of intersection is the centre of gravity.  ','optionB':'We can repeat the plumb line process for other points on the cardboard. The point of intersection is the centre of gravity (only) T ','optionC':'We can draw a horizontal line on the cardboard using a spirit level and the point of intersection is the centre of mass ','optionD':'We can repeat the plumb line process for other points on the cardboard. The point of intersection is the centre of mass (only) '},{'text':'Select the correct statement: ','image':'?','answer':'?','optionA':'The centre of mass is the geometric centre of an object ','optionB':'The centre of mass is the point where the entire weight of an object appears to act ','optionC':'The centre of mass is the point through which any externally applied force produces only rotation ','optionD':'The centre of mass is the point through which any externally applied force produces straight line motion but no rotation T '},{'text':'Select the correct statement: ','image':'?','answer':'?','optionA':'The centre of gravity is the geometric centre of an object. ','optionB':'The centre of gravity is an imaginary point where the entire weight of an object appears to act. T ','optionC':'The centre of gravity is the point through which any externally applied force produces only rotation. ','optionD':'The centre of gravity is the point through which any externally applied force produces straight line motion. '},{'text':'Consider a piece of cardboard in a uniform gravitational field. We can hang the cardboard from a point and then use a plumb line to draw a vertical line. Select the correct statement: ','image':'?','answer':'?','optionA':'We can repeat this for other points on the cardboard and the point of intersection is the centre of gravity (only). ','optionB':'We can repeat this for other points on the cardboard and the point of intersection is the centre of mass (only). ','optionC':'We can repeat this for other points on the cardboard and the point of intersection is the centre of gravity and also the centre of mass. T ','optionD':'We can draw a horizontal line on the cardboard using a spirit level and the point of intersection is the centre of gravity. '},{'text':'Select the correct equation for the moment of a force ','image':'?','answer':'?','optionA':'Moment = F x d T ','optionB':'Moment = F x t ','optionC':'Moment = F / d ','optionD':'Moment = F / t '},{'text':'Select the correct definition of a moment of a force: ','image':'?','answer':'?','optionA':'The moment is the force times the perpendicular distance from the line of action of the force to the centre of mass of the object ','optionB':'The moment is the force times the perpendicular distance from the line of action of the force to the axis or point of rotation T ','optionC':'The moment is the force times the parallel distance from the line of action of the force to the centre of mass of the object ','optionD':'The moment is the force times the parallel distance from the line of action of the force to the axis or point of rotation '},{'text':'A force of 10.0 N is acting on a plank at an angle of 55.0 degrees to the horizontal, as shown below. The distance between the pivot and the point at which the force is applied is 20.0 cm. By first resolving the force into its perpendicular component, calculate the moment of the force F1 about the pivot. ','image':'?','answer':'?','optionA':'2.86 Nm ','optionB':'2.00 Nm ','optionC':'1.64 Nm ','optionD':'1.45 Nm '},{'text':'Select the correctly written Principle of Moments: ','image':'?','answer':'?','optionA':'For a body in equilibrium the sum of the anti-clockwise and clockwise moments is non-zero ','optionB':'For a body at rest the sum of the anti-clockwise moments is equal to the sum of clockwise moments ','optionC':'For a body in rotational equilibrium the sum of the anti-clockwise moments is equal to the sum of clockwise moments T ','optionD':'For a body with zero net force acting on it, the sum of the anti-clockwise moments is equal to the sum of clockwise moments '},{'text':'Which of the statements below about couples are correct? ','image':'?','answer':'?','optionA':'The net force from a couple is always zero. T ','optionB':'The net moment from a couple is always zero. ','optionC':'The principle of moments applies to a couple. ','optionD':'? '},{'text':'A driving wheel has two equal forces acting on opposite sides of the wheel, in opposite directions. Which of the statements below is true about the wheel? ','image':'?','answer':'?','optionA':'The wheel is in equilibrium as the net force acting on it is zero and the sum of the anticlockwise moments is equal to the sum of the clockwise moments ','optionB':'The wheel is not in equilibrium because the net force on acting on it is non-zero ','optionC':'The wheel is not in equilibrium because the net force acting on it is non-zero and the sum of the anticlockwise moments is not equal to the sum of the clockwise moments ','optionD':'The wheel is not in equilibrium because even though the net force acting on it is zero, the sum of the anticlockwise moments is not equal to the sum of the clockwise moments T'},]

fluids_quiz_short_quiz.json

[{'text':'A cork of mass m and having density that is 50% of water density is totally immersed in a container of water. The cork is tied with a string and firmly attached to the bottom the container. The tension in the string is ','image':'?','answer':'?','optionA':'mg ','optionB':'2mg ','optionC':'0 ','optionD':'1/2mg '},{'text':'The buoyant force on a solid cube of iron as it sinks into water of constant density ','image':'?','answer':'?','optionA':'increases ','optionB':'decreases ','optionC':'stays the same ','optionD':'depends on the shape '},{'text':'When completely submerged under water, the apparent weight and volume of a steel block is 7.750 X 10^4 N and 1 m^3 respectively . The weight in air is ','image':'?','answer':'?','optionA':'6.750 X 10^4 N ','optionB':'8.525 X 10^4 N ','optionC':'8.750 X 10^4 N ','optionD':'6.975 X 10^4 N '},{'text':'A ship sails out of a river of fresh water into the sea. The mass of water displaced in the sea is ','image':'?','answer':'?','optionA':'greater ','optionB':'less ','optionC':'the same ','optionD':'depends on the shape of the ship '},{'text':'A solid body weighs 500N in air and 300N when completely submerged in water. The density is ','image':'?','answer':'?','optionA':'1.50 X 10^3 kgm^-3 ','optionB':'1.67 X 10^3 kgm^-3 ','optionC':'6.00 X 10^3 kgm^-3 ','optionD':'2.50 X 10^3 kgm^-3 '},{'text':'The buoyant force on a completely submerged object depends on ','image':'?','answer':'?','optionA':'its density ','optionB':'its volume ','optionC':'its mass ','optionD':'all of the above '},{'text':'Air bubbles expand when rising to the surface in water because ','image':'?','answer':'?','optionA':'the water pressure increases as the bubbles ascend to the surface ','optionB':'the water pressure decreases as the bubbles ascend to the surface ','optionC':'the air pressure increases as the bubbles ascend to the surface ','optionD':'air diffuses to occupy maximum space when unconfined '},{'text':'Fluid pressure is always directed ','image':'?','answer':'?','optionA':'up ','optionB':'down ','optionC':'sideways ','optionD':'in all directions '},]

fluids_short_quiz.json

[{'text':'A cork of mass m and having density that is 50% of water density is totally immersed in a container of water. The cork is tied with a string and firmly attached to the bottom the container. The tension in the string is ','image':'?','answer':'?','optionA':'mg ','optionB':'2mg ','optionC':'0 ','optionD':'1/2mg '},{'text':'The buoyant force on a solid cube of iron as it sinks into water of constant density ','image':'?','answer':'?','optionA':'increases ','optionB':'decreases ','optionC':'stays the same ','optionD':'depends on the shape '},{'text':'When completely submerged under water, the apparent weight and volume of a steel block is 7.750 X 10^4 N and 1 m^3 respectively . The weight in air is ','image':'?','answer':'?','optionA':'6.750 X 10^4 N ','optionB':'8.525 X 10^4 N ','optionC':'8.750 X 10^4 N ','optionD':'6.975 X 10^4 N '},{'text':'A ship sails out of a river of fresh water into the sea. The mass of water displaced in the sea is ','image':'?','answer':'?','optionA':'greater ','optionB':'less ','optionC':'the same ','optionD':'depends on the shape of the ship '},{'text':'A solid body weighs 500N in air and 300N when completely submerged in water. The density is ','image':'?','answer':'?','optionA':'1.50 X 10^3 kgm^-3 ','optionB':'1.67 X 10^3 kgm^-3 ','optionC':'6.00 X 10^3 kgm^-3 ','optionD':'2.50 X 10^3 kgm^-3 '},{'text':'The buoyant force on a completely submerged object depends on ','image':'?','answer':'?','optionA':'its density ','optionB':'its volume ','optionC':'its mass ','optionD':'all of the above '},{'text':'Air bubbles expand when rising to the surface in water because ','image':'?','answer':'?','optionA':'the water pressure increases as the bubbles ascend to the surface ','optionB':'the water pressure decreases as the bubbles ascend to the surface ','optionC':'the air pressure increases as the bubbles ascend to the surface ','optionD':'air diffuses to occupy maximum space when unconfined '},{'text':'Fluid pressure is always directed ','image':'?','answer':'?','optionA':'up ','optionB':'down ','optionC':'sideways ','optionD':'in all directions'},]

gravitational_potential_quiz_short_quiz.json

[{'text':'which correctly states where physicists conventionally set the gravitational potential energy to be zero. ','image':'?','answer':'?','optionA':'At the centre of the mass creating the gravitational field ','optionB':'At infinity ','optionC':'Half-way between two masses ','optionD':'On the surface of the Sun '},{'text':'Identify the meaning of gravitational potential in relation to the gravitational potential energy. ','image':'?','answer':'?','optionA':'The gravitational potential is the gravitational potential energy per unit joule ','optionB':'The gravitational potential is the absolute value of the gravitational potential energy ','optionC':'The gravitational potential is the gravitational potential energy per unit newton ','optionD':'The gravitational potential is the gravitational potential energy per unit mass T '},{'text':'Select the correct definition of gravitational potential at a point ','image':'?','answer':'?','optionA':'The work done in moving a unit mass from infinity to that point in a gravitational field T ','optionB':'The work done in moving a mass from infinity to that point in a gravitational field ','optionC':'The work done in lifting a unit mass to that point from the surface of the mass that creates the gravitational field ','optionD':'The work done in lifting a mass to that point from the surface of the mass that creates the gravitational field '},{'text':'Is gravitational potential a vector or a scalar quantity? ','image':'?','answer':'?','optionA':'Vector ','optionB':'Scalar T ','optionC':'? ','optionD':'? '},{'text':'Identify the correct equation for the gravitational potential ','image':'?','answer':'?','optionA':'V = GM/r ','optionB':'V=GM/r^2 ','optionC':'V=-GM/r T ','optionD':'V=-GM/r^2 '},{'text':'Identify the correct definition of the gravitational potential energy for a mass at a point ','image':'?','answer':'?','optionA':'The work done in moving a unit mass from infinity to that point in a gravitational field ','optionB':'The work done in moving the mass from infinity to that point in a gravitational field T ','optionC':'The work done in lifting a unit mass to that point from the surface of the mass that creates the gravitational field ','optionD':'The work done in lifting the mass to that point from the surface of the mass that creates the gravitational field '},{'text':'Identify how the gravitational potential energy is related to the gravitational potential ','image':'?','answer':'?','optionA':'E = m/V ','optionB':'E=m^2V ','optionC':'E=mV T ','optionD':'E=V/m '},{'text':'Identify the correct equation for the gravitational potential energy for a radial field. ','image':'?','answer':'?','optionA':'E = GMm/r ','optionB':'E = GMm/r^2 ','optionC':'E = -GMm/r T ','optionD':'E = -GMm/r^2 '},{'text':'We can approximate that the gravitational field close to the surface of the Earth is uniform. Identify the statement that correctly describes the change in gravitational potential energy if a mass is moved horizontal to the Earths surface. You may assume that there are no resistive forces ','image':'?','answer':'?','optionA':'The gravitational potential energy increases and does so proportional to the acceleration ','optionB':'The gravitational potential energy increases and does so proportional to the work done ','optionC':'The gravitational potential energy increases and does so proportional to the force applied ','optionD':'The gravitational potential energy stays constant as no work is done by or against the gravitational force T '},{'text':'Imagine a planet of mass M and radius R. What factors will affect the escape velocity of an object of mass m, trying to escape the planets gravitational field? ','image':'?','answer':'?','optionA':'m and R ','optionB':'M only ','optionC':'M, m and R ','optionD':'M and R T'},]

internal_resistance_short_quiz.json

[{'text':'Two resistors in parallel (12 and 7 ohms) are connected in series with a 6V supply. The internal resistance of the supply is 0.5 ohms. What is the potential difference across the 12 ohm resistor? ','image':'?','answer':'?','optionA':'5.62V ','optionB':'5.39V ','optionC':'6V ','optionD':'4.95V '},{'text':'Two resistors in parallel (12 and 7 ohms) are connected in series with a 6V supply. The internal resistance of the supply is 0.5 ohms. What is the current in the circuit? ','image':'?','answer':'?','optionA':'1.38A ','optionB':'1.06A ','optionC':'1.22A T ','optionD':'1.13A '},{'text':'What is internal resistance? ','image':'?','answer':'?','optionA':'The resistance to current through a cell or other voltage source T ','optionB':'The resistance to a change in current in any electrical component ','optionC':'The resistance to a change in current in a cell or other voltage source ','optionD':'The resistance to flow of current through any electrical component '},{'text':'In which of these cases would a high internal resistance be useful? ','image':'?','answer':'?','optionA':'High tension supply T ','optionB':'Re-chargeable battery ','optionC':'Radio battery ','optionD':'Car battery '},{'text':'What is the internal resistance of a cell when there is a current of 0.40 through a resistor of 13.5 Ohm connected to a battery of emf 6.0 V ? ','image':'?','answer':'?','optionA':'1.5 Ohms T ','optionB':'2.3 Ohm ','optionC':'3.5 Ohm ','optionD':'4.5 Ohm '},{'text':'A load (external) resistance is connected to a voltage source that contains an internal resistance. If the load resistance is ?, the terminal (output) voltage will decrease. ','image':'?','answer':'?','optionA':'decreased T ','optionB':'increased ','optionC':'kept the same ','optionD':'removed '},{'text':'What will be the terminal pd of a cell of emf 2V and internal resistance 0.1 Ohm when supply a current of 5A ? ','image':'?','answer':'?','optionA':'1.5 V ','optionB':'2 V ','optionC':'1.9 V ','optionD':'2.5 V'},]

moments_and_equilibrium_short_quiz.json

[{'text':'A car of mass 1,200kg is on a bridge of mass 15,000kg and length 20m, which is supported at its two ends, A and B. The car is at a distance of 5m from B. What is the force required at B from the support for the bridge not to collapse? ','image':'?','answer':'?','optionA':'19,300N ','optionB':'75,600N ','optionC':'82,400N T ','optionD':'105,000N '},{'text':'A car of mass 1,500kg is stationary on a steep slope angled at 60 degrees. What is the magnitude of the frictional force due to the brakes of the car needed to keep the car stationary? ','image':'?','answer':'?','optionA':'9,320N ','optionB':'15,600N ','optionC':'12,700N T ','optionD':'6,050N '},{'text':'A car of mass 1,500kg is stationary on a steep slope angled at 60 degrees. What is the magnitude of the Normal force on the plane by the car? ','image':'?','answer':'?','optionA':'3,420N ','optionB':'7,360N T ','optionC':'10,500N ','optionD':'1,500N '},{'text':'A motorcycle is moving at constant velocity. The engine of the motorcycle applies a torque of 1750Nm to the back wheel which has a radius of 40cm. Assuming that the wheel does not skid what is the frictional force of the road on the wheel? ','image':'?','answer':'?','optionA':'3,985N ','optionB':'4,535N ','optionC':'4,795N ','optionD':'4,375N T'},]

momentum_short_quiz.json

[{'text':'A snooker ball of mass 0.1kg is initially at rest on a perfectly smooth table. It is struck by a cue, which exerts a force of 4 Newtons for 0.05 seconds. How fast is the snooker ball now moving? ','image':'?','answer':'?','optionA':'2 m/s T ','optionB':'20 m/s ','optionC':'4 m/s ','optionD':'1 m/s '},{'text':'Which is the correct definition of the principle of conservation of linear momentum? ','image':'?','answer':'?','optionA':'The total linear momentum of a system is constant provided that an external resultant force acts in the direction of motion of the system ','optionB':'The total linear momentum of a system is constant provided that there is no external resultant force acting T ','optionC':'The total linear momentum of a system is constant provided that there is an external resultant force acting ','optionD':'The total linear momentum of a system is constant provided that the temperature of the system remains constant '},{'text':'A nucleus of Uranium-238 has mass 3.95 x10^-25 kg and undergoes radioactive decay. The nucleus is initially at rest, and splits into two product particles. One is a Uranium-234 nucleus of mass 3.88 x10^-25 kg which moves away at speed 0.1 m/s, and the other is an alpha particle of mass 6.64 x106-27kg. How fast is this particle moving? ','image':'?','answer':'?','optionA':'584 m/s ','optionB':'58.5 m/s ','optionC':'5.84 m/s ','optionD':'? '},{'text':'A 2kg and a 3kg mass are moving freely in a straight line. The 2kg mass collides inelastically with velocity 4 m/s into the 3kg mass, which is moving at 2 m/s in the same direction. After the collision the objects are both still travelling in the same direction. If the 2kg mass is travelling at 1 m/s then how fast is the 3kg mass moving? ','image':'?','answer':'?','optionA':'3 m/s ','optionB':'5 m/s ','optionC':'4 m/s T ','optionD':'2 m/s '},{'text':'Complete the sentence. The rate of change of an objects linear momentum is ','image':'?','answer':'?','optionA':'dependent on the objects mass ','optionB':'equal to its kinetic energy ','optionC':'inversely proportional to the the resultant external force ','optionD':'directly proportional to the resultant external force T '},{'text':'A truck of mass 5000kg is travelling at 10 m/s and hits a stationary van of mass 3000kg. The van is crushed into the truck after the collision, and the two physically become one object of mass 8000kg. If no other forces are acting on the vehicles, how fast do they move together after the collision? ','image':'?','answer':'?','optionA':'0 m/s ','optionB':'7.5 m/s ','optionC':'6.25 m/s T ','optionD':'5 m/s '},{'text':'A water cannon ejects 20 litres of water per second, at a muzzle velocity of 5 m/s. A protester is hit in the face with a jet from the water cannon. Any water which hits the protester comes to an immediate stop. What is the force exerted by the jet on the protesters face? (1 litre of water has a mass of 1kg) ','image':'?','answer':'?','optionA':'4N ','optionB':'100N T ','optionC':'1kN ','optionD':'0.25N '},{'text':'In the context of linear momentum, what is the definition of an impulse? ','image':'?','answer':'?','optionA':'The magnitude of a force divided by the time for which it acts ','optionB':'The magnitude of a force multiplied by the time for which it acts T ','optionC':'Low-speed spaceship engine setting ','optionD':'The magnitude of a force multiplied by the mass of the object on which it acts '},{'text':'A spacecraft initially at rest of mass 20,000kg fires its rocket, which expels 100kg of gas every second at a speed of 1000 m/s. How long would the rockets have to be fired for to accelerate the rocket to a speed of 50 m/s? ','image':'?','answer':'?','optionA':'9.52 s ','optionB':'10.3 s T ','optionC':'17.9 s ','optionD':'11.7 s '},{'text':'A tank, at rest, of mass 50 tonnes fires its main gun. The gun fires a shell of mass 20kg horizontally at a speed of 1 km/s. If we assume that no other forces are acting on the tank, how fast does it recoil from firing its gun? ','image':'?','answer':'?','optionA':'4 m/s ','optionB':'0.4 m/s T ','optionC':'0.0004 m/s ','optionD':'2 m/s '},{'text':'A boat of mass 1000kg is initially moving at 5 m/s on a perfectly smooth lake. To go faster, the crew put up a sail. The wind hitting this sail transfers 50N of force to the boat. After 5 minutes with the sail up, how fast is the boat now moving? You may assume that there are no forces acting on the boat other than the wind hitting the sail. ','image':'?','answer':'?','optionA':'5.25 m/s ','optionB':'155 m/s ','optionC':'20 m/s T ','optionD':'6.5 m/s '},{'text':'What are the units of linear momentum? ','image':'?','answer':'?','optionA':'m s kg^-1 ','optionB':'m^-1 s kg ','optionC':'m s^-1 kg T ','optionD':'m s-2 kg '},{'text':'Which is the correct definition of an elastic collision? ','image':'?','answer':'?','optionA':'linear momentum is not conserved ','optionB':'afterwards the two objects involved travel in opposite directions to one another ','optionC':'no loss of kinetic energy T ','optionD':'all kinetic energy is lost '},{'text':'A 1kg body travelling at 2 m/s collides inelastically with a 2kg body at rest. After the collision the 1kg body is at rest. How fast is the 2kg body moving after the collision? ','image':'?','answer':'?','optionA':'0.5 m/s ','optionB':'2 m/s ','optionC':'1 m/s ','optionD':'1.2 m/s '},{'text':'A ball of mass 0.75kg, moving at 25m/s, collides with a bat. It stays in contact with the bat for 0.01s and rebounds at a velocity of 35m/s in the opposite direction. What is the average magnitude of the force applied by the bat on the ball? ','image':'?','answer':'?','optionA':'3,500N ','optionB':'4,500N T ','optionC':'5,000N ','optionD':'4,000N '},{'text':'A car, of mass 1000kg, travelling at 20m/s collides with a concrete wall. It takes the car 0.5 seconds to come to a complete halt. Calculate the impact force of the crash. ','image':'?','answer':'?','optionA':'30,000N ','optionB':'40,000N T ','optionC':'20,000N ','optionD':'50,000N'},]

non_uniform_motion_quiz_short_quiz.json

[{'text':'Consider two variable x and y. If they are related by the equation y = kx, where k is a constant, then we say that: ','image':'?','answer':'?','optionA':'y increases exponentially with x ','optionB':'y and x obey an inverse square law ','optionC':'y is inversely proportional to x ','optionD':'y is proportional to x T '},{'text':'Drag is proportional to: ','image':'?','answer':'?','optionA':'the density of an object ','optionB':'the length of an object ','optionC':'the frontal area of an object T ','optionD':'the volume of an object '},{'text':'Drag is proportional to frontal area. More specifically, drag is proportional to: ','image':'?','answer':'?','optionA':'the total surface area of the object ','optionB':'the surface area that is perpendicular to the direction of motion T ','optionC':'the surface area that is parallel to the direction of motion ','optionD':'half of the total surface area '},{'text':'Drag is also proportional to: ','image':'?','answer':'?','optionA':'the velocity ','optionB':'the velocity squared T ','optionC':'the velocity cubed ','optionD':'the square-root of the velocity '},{'text':'At t=3 seconds, an aid package has a drag force of 250 N. At t=9 s, the aid package has a drag force of 1000 N. Select the correct statement: ','image':'?','answer':'?','optionA':'As the drag force increases, the weight decreases. This means that the magnitude of the net force on the package will increase ','optionB':'As the drag force increases, the weight remains constant. This means that the magnitude of the net force on the package will increase ','optionC':'As the drag force increases, the weight decreases. This means that the magnitude of the net force on the package will decrease ','optionD':'As the drag force increases, the weight remains constant. This means that the magnitude of the net force on the package will decrease '},{'text':'',]

nuclear_structure_short_quiz.json

[{'text':'Before Rutherfords experiment, how was an atom described? ','image':'?','answer':'?','optionA':'Trifle ','optionB':'Spotted dick ','optionC':'Plum pudding T ','optionD':'Roly poly '},{'text':'What is an isotope? ','image':'?','answer':'?','optionA':'Atoms of different elements with the same number of neutrons ','optionB':'Atoms of the same element with a different number of electrons ','optionC':'Atoms of the same element with a different number of neutrons T ','optionD':'Atoms of the same element with a different number of protons '},{'text':'In Rutherfords experiment, what would happen when an alpha particle would hit the zinc sulphide screen? ','image':'?','answer':'?','optionA':'The screen would be disentegrated ','optionB':'It would bounce back ','optionC':'It would be deflected ','optionD':'The screen would emit light T '},{'text':'What is the atomic number? ','image':'?','answer':'?','optionA':'Proton Number T ','optionB':'Mass Number ','optionC':'Nucleon Number ','optionD':'Electron number '},{'text':'Of what order of magnitude is the radius of a gold nucleus? ','image':'?','answer':'?','optionA':'Femtometres T ','optionB':'Micrometers ','optionC':'Nanometres ','optionD':'Angstroms '},{'text':'In Rutherfords experiment, what is the purpose of the zinc sulphide screen? ','image':'?','answer':'?','optionA':'It is the source of alpha particles ','optionB':'It acts as a detector for alpha particles T ','optionC':'It deflects alpha particles ','optionD':'It shields the observers from alpha particles '},{'text':'What material did Rutherford use as a target for his alpha particles? ','image':'?','answer':'?','optionA':'Aluminium ','optionB':'Gold T ','optionC':'Silver ','optionD':'Lead '},{'text':'What is the dependence of the radius of a nucleus on the nucleon number? ','image':'?','answer':'?','optionA':'R = r0 / A^(1/3) ','optionB':'R = r0 A ','optionC':'R = r0 A^(1/3) T ','optionD':'R = r0 A^3 '},{'text':'How many neutrons in a hydrogen atom? ','image':'?','answer':'?','optionA':'0 T ','optionB':'3 ','optionC':'1 ','optionD':'2 '},{'text':'What did Rutherford's experiment of 1909, where alpha particles where fired at thin gold foil, demonstrate? ','image':'?','answer':'?','optionA':'Photons are massless ','optionB':'Atoms have neutral charge ','optionC':'Atoms contain a very small and dense nucleus which is positively charged T ','optionD':'Electrons have negative charge'},]

ohms_law_short_quiz.json

[{'text':'What is Ohms law? ','image':'?','answer':'?','optionA':'Resistance is proportional to current ','optionB':'Current is inversely proportional to voltage ','optionC':'Resistance is inversely proportional to voltage ','optionD':'Current is proportional to voltage T '},{'text':'A 250O resistor and a 750 Ohm resistor are connected in series with a 8V battery of negligible internal resistance. What is the potential difference across the 250 Ohm resistor? ','image':'?','answer':'?','optionA':'6V ','optionB':'4V ','optionC':'2V T ','optionD':'8V '},{'text':'Three resistors, of resistance 4k Ohm, 1k Ohm and 7k Ohm respectively, are connected in series with a supply voltage of 4V. What is the potential difference across the 7k Ohm resistor? ','image':'?','answer':'?','optionA':'2.7V ','optionB':'2.3V T ','optionC':'2.5V ','optionD':'2.1V '},{'text':'Three resistors, of resistance 4k Ohm, 1k Ohm and 7k Ohm respectively, are connected in series with a supply voltage of 4V. What is the potential difference across the 1k Ohm resistor? ','image':'?','answer':'?','optionA':'0.3V T ','optionB':'0.9V ','optionC':'0.1V ','optionD':'0.6V '},{'text':'A thermistor has a resistance of 2,000 Ohms when it is at room temperature. If a voltage source of 5V is connected in series with the thermistor what current flows in the circuit? ','image':'?','answer':'?','optionA':'4.5 mA ','optionB':'2.5 mA T ','optionC':'1.5 mA ','optionD':'3.5 mA '},{'text':'What is the definition of resistance? ','image':'?','answer':'?','optionA':'R = V/Q ','optionB':'R = I/V ','optionC':'R = Q/V ','optionD':'R = V/I T '},{'text':'Because its resistance decreases with temperature what type of coefficient is a semiconductor said to have? ','image':'?','answer':'?','optionA':'Positive temperature coefficient ','optionB':'Increasing thermoresistance coefficient ','optionC':'Decreasing thermoresistance coefficient ','optionD':'Negative temperature coefficient T '},{'text':'What happens to the resistance of these two components as their temperature rises? A. Metal wire , B. Intrinsic semiconductor ','image':'?','answer':'?','optionA':'A. Decreases , B. Decreases ','optionB':'A. Increases , B. Decreases T ','optionC':'A. Increases , B. Increases ','optionD':'A. Decreases , B. Increases '},{'text':'A resistor (3kOhms) is measured by a voltmeter to have a potential difference of 5V across it. What is the current through the resistor? ','image':'?','answer':'?','optionA':'1.67 mA T ','optionB':'1.85 mA ','optionC':'0.92 mA ','optionD':'1.18 mA '},{'text':'A steady current, of 0.3A, flows through a resistor over a period of 2 minutes. If the resistor has resistance 3 Ohms what is the voltage across the resistor? ','image':'?','answer':'?','optionA':'0.9V T ','optionB':'0.3V ','optionC':'3V ','optionD':'9V '},{'text':'A graph of voltage across a resistor (y-axis) against current through the resistor (x-axis) is drawn. How would you find the resistance of the resistor from the graph? ','image':'?','answer':'?','optionA':'Inverse of the gradient ','optionB':'Maximum value of current multiplied by minimum value of voltage ','optionC':'Gradient T ','optionD':'Area under the graph'},]

orbits_short_quiz.json

[{'text':'Which kind of orbit would be most suitable for a satellite monitoring the Earths weather? For example making temperature measurements of the Earths surface. ','image':'?','answer':'?','optionA':'A low orbit with a high orbital speed T ','optionB':'A geostationary orbit ','optionC':'? ','optionD':'? '},{'text':'If the Earth orbits the sun (mass 2 x 10^30 kg) in a perfect circle at a constant speed of 30 km/s, what is its orbital radius? ','image':'?','answer':'?','optionA':'7.8 x 10^9 m ','optionB':'1.1 x 10^15 m ','optionC':'1.5 x 10^11 m T ','optionD':'4.4 x 10^15 m '},{'text':'Which kind of satellite orbit would be appropriate for a satellite relaying television pictures? ','image':'?','answer':'?','optionA':'A low orbit with a high orbital speed ','optionB':'A geostationary orbit T ','optionC':'? ','optionD':'? '},{'text':'Which of the following is the correct definition of the speed of an object in a circular orbit, of radius r, around a body with mass M? ','image':'?','answer':'?','optionA':'v=root(GM/r) T ','optionB':'v=root(2GM/r) ','optionC':'v=GM/r ','optionD':'v=2GM/r'},]

pressure_quiz_short_quiz.json

[{'text':'Select the statement that displays correctly the equation and S.I. derived unit of pressure. ','image':'?','answer':'?','optionA':'Pressure = Force / Area. Units: [Pa] T ','optionB':'Pressure = Force * Area. Units: [Pa] ','optionC':'Pressure = Force / Volume. Units: [N m^-3] ','optionD':'Pressure = Force * Volume. Units: [N m^3] '},{'text':'The SI derived unit of pressure is Pascals, Pa. Identify an equivalent unit for pressure ','image':'?','answer':'?','optionA':'N m^-2 T ','optionB':'J ','optionC':'W ','optionD':'Pa '},{'text':'Pressure is defined as force per unit area. Select the correct definition of unit area when using S.I units. ','image':'?','answer':'?','optionA':' When using SI units, unit area means 10 S.I unit. Therefore a unit area means 10 cm^2. ','optionB':'When using SI units, unit area means 1 S.I unit. Therefore a unit area means 1 m^2. T ','optionC':'When using SI units, unit area means 1 S.I unit. Therefore a unit area means 1 cm^2. ','optionD':'When using SI units, unit area means 10 S.I unit. Therefore a unit area means 10 m^2. '},{'text':'Two boxes (Box A and Box B) are resting on the ground. Each box has an area of 1 m^2 in contact with the ground. Box A has a weight of 100 N. Box B has a weight of 500 N. Select the correct statement: ','image':'?','answer':'?','optionA':'Box B applies a greater pressure to the ground than Box A because it applies a higher force per unit area T ','optionB':'Box A applies a greater pressure to the ground than Box B because it applies a higher force per unit area ','optionC':'Box B applies a greater pressure to the ground than Box A because it applies a lower force per unit area ','optionD':'The boxes apply the same pressure '},{'text':'Two boxes (Box A and Box B) are resting on the ground. Each box has a weight of 100 N. Box A has a base area of 0.5 m^2. Box B has a base area of 2 m^2. Select the correct statement: ','image':'?','answer':'?','optionA':'Box B applies a greater pressure to the ground than Box A because it applies a higher force per unit area ','optionB':'Box A applies a greater pressure to the ground than Box B because it applies a higher force per unit area T ','optionC':'Box B applies a greater pressure to the ground than Box A because it applies a lower force per unit area ','optionD':'The boxes apply the same pressure '},{'text':'Two boxes (Box A and Box B) are resting on the ground. Box A has a weight of 100 N and a base area of 2 m^2. Box B has a weight of 500 N and a base area of 10 m^2. Select the correct statement: ','image':'?','answer':'?','optionA':'Box B applies a greater pressure to the ground than Box A because it applies a higher force per unit area ','optionB':'Box A applies a greater pressure to the ground than Box B because it applies a higher force per unit area ','optionC':'Box B applies a greater pressure to the ground than Box A because it applies a lower force per unit area ','optionD':'The boxes apply the same pressure T '},{'text':'A small submarine of mass 100kg is placed into a test pool and displaces 3m^3 of water. Calculate the upthrust on the submarine. The density of water is 1x10^3 kgm-3. ','image':'?','answer':'?','optionA':'981 N ','optionB':'3000 N ','optionC':'22540 N ','optionD':'29430 N T'},]

projectiles_quiz_short_quiz.json

[{'text':'A bullet is fired at a speed of 940 m s-1 in the horizontal plane, with an initial vertical speed of 0ms^-1. The gun is fired from a raised platform. The bullet travels 300m in the horizontal plane before hitting the ground.  Calculate the height of the platform.  You may ignore air resistance. We define upwards as positive. ','image':'?','answer':'?','optionA':'0.1 m ','optionB':'0.3 m ','optionC':'0.5 m ','optionD':'0.8 m '},{'text':' A tennis ball is hit such that it follows a projectile motion with initial speed of 12ms^-1 at an angle of 50 degrees to the horizontal. Calculate the time of flight of the tennis ball. ','image':'?','answer':'?','optionA':'0.79s ','optionB':'0.94s ','optionC':'1.57s ','optionD':'1.88s T '},{'text':'An artillery shell is launched into the Pacific Ocean. The shell is launched at an angle of 60 degrees and at an initial speed of 40 ms^-1. Calculate the horizontal displacement of the shell at the point it hits the water. You can ignore air resistance. ','image':'?','answer':'?','optionA':'71 m ','optionB':'141 m ','optionC':'223 m ','optionD':'386 m '},{'text':'Tom is playing in a paintball tournament. He is lying flat on top of a raised 5m high platform above a field with his gun such that the barrel is perfectly horizontal to the platform and ground. A small contraption is attached to the gun that releases a blue paintball vertically at the exact moment a red paintball is fired in the horizontal direction. The initial force exerted on the blue paintball is only that of gravity. Which of the following statements is correct? You can ignore air resistance. ','image':'?','answer':'?','optionA':'The blue paintball will reach the ground before the red paintball because it has to travel less distance ','optionB':'The blue paintball will reach the ground after the red paintball because the red paintball is travelling much faster ','optionC':'The blue paintball will reach the ground at the same time as the red paintball because the higher speed of the red paintball is compensated by the smaller distance of travel of the blue paintball ','optionD':'The blue paintball will reach the ground at the same time as the red paintball because the vertical acceleration is the same on both paintballs T '},{'text':'A golf ball is hit at an initial speed of 50ms^-1 at an angle of 35 degrees from the ground. By considering both the horizontal and vertical speed after 2 seconds, calculate the resultant speed of the ball after 2 seconds? ','image':'?','answer':'?','optionA':'42.0 ms^-1 T ','optionB':'49.1 ms^-1 ','optionC':'54.7 ms^-1 ','optionD':'63.4 ms^-1'},]

projectiles_short_quiz.json

[{'text':'Derive an expression for the vertical velocity of a projectile at any time t. ','image':'?','answer':'?','optionA':'vsinA +gt ','optionB':'vsinA + gt^2 ','optionC':'vsinA ','optionD':'VsinA -gt T '},{'text':'A cannon ball is fired horizontally at an initial velocity of 12m/s from the top of a cliff of height 25m. How far does the cannon ball travel from the cliff (x) before hitting the water? ','image':'?','answer':'?','optionA':'30.6 m/s ','optionB':'27.1 m T ','optionC':'34.5 m/s ','optionD':'37.8 m/s '},{'text':'A cannon ball is fired horizontally at an initial velocity of 12m/s from the top of a cliff of height 25m. What is the magnitude of the cannon balls final velocity? ','image':'?','answer':'?','optionA':'21.6m/s ','optionB':'25.2m/s T ','optionC':'29.9m/s ','optionD':'19.5m/s '},{'text':'A slingshot fires a ball, of mass 0.2kg, at 17.7m/s. If the slingshot is fired at 30 degrees to the horizontal what height does the ball reach? It starts at a height of 0m. ','image':'?','answer':'?','optionA':'3.26m ','optionB':'3.99m T ','optionC':'3.54m ','optionD':'3.85m '},{'text':'A cannon ball is fired at an angle A above the horizontal, at a velocity v. Derive the formula for the vertical displacement of the cannon ball (Ignore the effects of air resistance). ','image':'?','answer':'?','optionA':'y = vcos(A)t ','optionB':'y = v sin(A) t - (1/2)gt^2 T ','optionC':'y = v sin(A) t ','optionD':'y = v cos(A) t - (1/2) g t '},{'text':'A cannon ball is fired horizontally at an initial velocity of 12m/s from the top of a cliff of height 25m. What is the final horizontal velocity of the cannon ball before hitting the water? ','image':'?','answer':'?','optionA':'6m/s ','optionB':'12m/s T ','optionC':'10m/s ','optionD':'8m/s '},{'text':'An arrow is fired at 45m/s at an angle of 40 degrees. After 2 seconds what is the distance travelled in the horizontal direction by the arrow? ','image':'?','answer':'?','optionA':'92.7m ','optionB':'65.8m ','optionC':'86.3m ','optionD':'68.9m T '},{'text':'A cannon ball is fired at an angle A above the horizontal, at a velocity v. Derive the formula for the horizontal displacement in a time t. (Ignore the effects of air resistance) ','image':'?','answer':'?','optionA':'x = vsin(A)t^2 ','optionB':'x = vcos(A)t^2 ','optionC':'x = vsin(A)t ','optionD':'x = vcos(A)t T'},]

resistivity_short_quiz.json

[{'text':'The current through a wire is measured to be 2A when the voltage across it is 4V. The length of the wire is 0.5m and it has a cross-sectional area of 3x10^-8 m^2. What is the resistivity of the material that makes up the wire in ohm metres? ','image':'?','answer':'?','optionA':'1.2x10^-7 T ','optionB':'2.5x10^-7 ','optionC':'4.7x10^-7 ','optionD':'3.4x10^-7 '},{'text':'A cylindrical wire is made up of copper which has a resistivity of 17.2n Ohm m. If the wire is 3m long and has a cross-sectional radius of 0.2mm what is its resistance? ','image':'?','answer':'?','optionA':'0.259 Ohm ','optionB':'0.411 Ohm T ','optionC':'0.382 Ohm ','optionD':'0.137 Ohm '},{'text':'A wire of length 5m has a resistivity of 16.5n Ohm m and a resistance of 2O. What is the cross-sectional area of the wire? ','image':'?','answer':'?','optionA':'2.74x10^-8 m^2 ','optionB':'3.49x10^-8 m^2 ','optionC':'5.51x10^-8 m^2 ','optionD':'4.13x10^-8 m^2 T '},{'text':'A wire has a constant circular cross-sectional area of 4.13x10^-8 m^2, work out the radius of the wire. ','image':'?','answer':'?','optionA':'1.1x10^-4m T ','optionB':'1.74x10^-4m ','optionC':'2.6x10^-4m ','optionD':'2.3x10^-4m '},{'text':'What are the units for resistivity? ','image':'?','answer':'?','optionA':'Ohm m^2 ','optionB':'Ohm m T ','optionC':'Ohm per m ','optionD':'m per Ohm '},{'text':'A cylindrical wire has a constant cross-sectional radius of 0.15mm. The material it is made of has resistivity 24.7n Ohm m. The resistance of the wire is measured to be 4,000O. What is the length of the wire? ','image':'?','answer':'?','optionA':'12,900m ','optionB':'10,200m ','optionC':'13,500m ','optionD':'11,400m T '},{'text':'What is the formula for resistivity in terms of the resistance R, the cross-sectional area A and the length L ? ','image':'?','answer':'?','optionA':'AR^2/L ','optionB':'RL/A ','optionC':'RA/L T ','optionD':'AL/R '},{'text':'A coil of wire has radius 2cm and 2,000 turns. The wire itself has resistivity 12.3n Ohm m and has a circular cross-section of radius 0.1mm. What is the resistance of the coil of wire? ','image':'?','answer':'?','optionA':'113 Ohms ','optionB':'94.7 Ohms ','optionC':'105 Ohms ','optionD':'98.4 Ohms T'},]

resultant_force_quiz_short_quiz.json

[{'text':'Which is correct ? ','image':'?','answer':'?','optionA':'The net or resultant force is the biggest force acting on an object ','optionB':'The net or resultant force is decided by the user: the user select which force to call the net or resultant force ','optionC':'The net or resultant force is the force acting on an object if we ignore friction and air resistance ','optionD':'The net or resultant force is the vector sum of all the forces acting on an object T '},{'text':'The net force on an object of mass 10kg is zero. Select the correct statement: ','image':'?','answer':'?','optionA':'The object will not move ','optionB':'The object will experience a non-zero and constant acceleration ','optionC':'The object will experience a change in velocity ','optionD':'The object will experience zero acceleration T '},{'text':'Select the correct definition of the Newton: ','image':'?','answer':'?','optionA':'1 Newton is the force required to accelerate a mass of 1 kg by 1 m s^-2 in the direction of the force T ','optionB':'1 Newton is the force required to accelerate a mass of 10 kg by 1 m s^-2 in the direction of the force ','optionC':'1 Newton is the force required to accelerate a mass of 1 kg by 10 m s^-2 in the direction of the force ','optionD':'? '},{'text':'A block of wood is at rest on a slope. Identify the correct forces acting on the block. ','image':'?','answer':'?','optionA':'Weight, Friction, Tension ','optionB':'Weight, Upthrust, Tension ','optionC':'Weight, Friction, Normal Contact Force T ','optionD':'? '},{'text':'Identify the correct equation for weight: ','image':'?','answer':'?','optionA':'Weight = force x gravitational acceleration ','optionB':'Weight = force x mass ','optionC':'Weight = mass x gravitational force ','optionD':'Weight = mass x gravitational acceleration T '},{'text':'John has a mass of 85 kg. His weight on Earth is 830 N. What would Johns weight be on Jupiter, where the gravitational acceleration is 2.54 times stronger than Earths? ','image':'?','answer':'?','optionA':'85 N ','optionB':'210 N ','optionC':'830 N ','optionD':'2100 N T '},{'text':'A car of mass 1300kg has an engine that produces a force of 2500 N when the accelerator is fully depressed. Calculate the acceleration of the car when the accelerator is fully depressed. ','image':'?','answer':'?','optionA':'0.52 ms^-2 ','optionB':'1.92 ms^-2 T ','optionC':'1.06 ms^-2 ','optionD':'3.20 ms^-2 '},{'text':'',]

resultant_force_short_quiz.json

[{'text':'A car (1200kg) is connected to a trailer (300kg) by a metal rod. The cars engine provides a thrust force of 5000N. There is a resistive force of 1000N on the car and one of 200N on the trailer. Find the acceleration of the vehicle. ','image':'?','answer':'?','optionA':'2.86m/s^2 ','optionB':'2.72m/s^2 ','optionC':'2.25m/s^2 ','optionD':'2.53m/s^2 T '},{'text':'A ball of mass 200grams is dropped and falls for 3 seconds before hitting the ground. Air resistance applies a constant force 0.5N against the balls motion. What is the final velocity of the ball just before it makes contact with the ground? ','image':'?','answer':'?','optionA':'17.8m/s ','optionB':'24.3m/s ','optionC':'19.5m/s ','optionD':'21.9m/s T '},{'text':'A car of mass 1,500kg is stationary on a steep slope angled at 60 degrees. The car starts up its engine which provides a thrust of 15000N up the hill. Find the acceleration of the car. ','image':'?','answer':'?','optionA':'2.4m/s^2 ','optionB':'2.1m/s^2 ','optionC':'1.5m/s^2 T ','optionD':'2.7m/s^2 '},{'text':'A woman pushes a box of stationary of mass 50kg with a force of 400N. The ground applies a frictional force on the box of 250N. At what rate does the box accelerate? ','image':'?','answer':'?','optionA':'3m/s^2 T ','optionB':'6m/s^2 ','optionC':'4m/s^2 ','optionD':'5m/s^2 '},{'text':'A woman of mass 55kg is in a lift of mass 500kg. The lift accelerates upwards at 1m/s^2. Find the tension in the cable which applies the upwards tension to the lift. ','image':'?','answer':'?','optionA':'6,300N ','optionB':'5,800N ','optionC':'5,500N ','optionD':'6,000N T'},]

series_and_parallel_short_quiz.json

[{'text':'A 20 Ohm resistor is connected in series to a 15 Ohm resistor. What is the combined resistance of the two resistors? ','image':'?','answer':'?','optionA':'35 Ohm T ','optionB':'20 Ohm ','optionC':'40 Ohm ','optionD':'5 Ohm '},{'text':'A 4O resistor and a 6O resistor are connected in parallel. They are also connected in series with a 5O resistor and a 12V supply of negligible internal resistance. What is the voltage across the 4O resistor? ','image':'?','answer':'?','optionA':'2.6V ','optionB':'3.9V T ','optionC':'4.5V ','optionD':'1.2V '},{'text':'In Series Circuit, which of the following quantity remains same through out the circuit? ','image':'?','answer':'?','optionA':'Current and Voltage ','optionB':'Current T ','optionC':'Voltage ','optionD':'None '},{'text':'A voltmeter should be connected to a circuit in.. ','image':'?','answer':'?','optionA':'Series ','optionB':'Parallel T ','optionC':'Short form ','optionD':'None of the above '},{'text':'Three resistances 20 Ohm, 30 Ohm and 60 Ohm are connected in parallel, their combined resistance is given by ','image':'?','answer':'?','optionA':'110 Ohm ','optionB':'50 Ohm ','optionC':'20 Ohm ','optionD':'10 Ohm T '},{'text':'Two 10 O resistors are connected in parallel, their equivalent resistance is ','image':'?','answer':'?','optionA':'5 Ohm T ','optionB':'0.2 Ohm ','optionC':'15 Ohm ','optionD':'20 Ohm '},{'text':'An ammeter should always have a ','image':'?','answer':'?','optionA':'high resistance ','optionB':'low resistance T ','optionC':'low voltage ','optionD':'high voltage '},{'text':'What is the total resistance of a circuit when R1 (7 k Ohm) is in series with a parallel combination of R2 (20 k Ohm), R3 (36 k Ohm), and R4 (45 k Ohm)? ','image':'?','answer':'?','optionA':'4 k Ohm ','optionB':'17 k Ohm T ','optionC':'41 k Ohm ','optionD':'108 k Ohm '},{'text':'If two 4 Ohm resistors are connected in parallel the effective resistance of the circuit is: ','image':'?','answer':'?','optionA':'8 Ohm ','optionB':'4 Ohm ','optionC':'2 Ohm T ','optionD':'1 Ohm '},{'text':'The effect of connecting an additional parallel load to an electrical supply source is to increase the: ','image':'?','answer':'?','optionA':'resistance of the load ','optionB':'voltage of the source ','optionC':'current taken from the source T ','optionD':'p.d. across the load '},{'text':'A 10 Ohm resistor is connected in parallel with a 15 Ohm resistor and the combination in series with a 12 Ohm resistor. The equivalent resistance of the circuit is: ','image':'?','answer':'?','optionA':'37 Ohm ','optionB':'18 Ohm T ','optionC':'27 Ohm ','optionD':'4 Ohm '},{'text':'A voltmeter should have ? resistance ','image':'?','answer':'?','optionA':'zero ','optionB':'very high T ','optionC':'very low ','optionD':'None of the above'},]

solving_suvat_equations_short_quiz.json

[{'text':'A conker, initially at rest, falls from a tree. Select the correct statement from below. You may ignore air resistance. ','image':'?','answer':'?','optionA':'The conker is in free-fall and therefore has an acceleration of g=8.81 ms^-2 ','optionB':'The conker is in free-fall and therefore has a velocity of g=8.81 ms-1 ','optionC':'The conker is in free-fall and therefore has an acceleration of g=9.81 ms^-2 ','optionD':'The conker is in free-fall and therefore has a velocity of g=9.81 ms^-1 '},{'text':'A conker, initially at rest, falls from a tree and travels 2m before it hits the floor. Select the correct statement from below. You may assume that we can ignore air resistance. ','image':'?','answer':'?','optionA':'suvat equations can be used because the conker has constant velocity ','optionB':'suvat equations can be used because the conker has changing speed ','optionC':'suvat equations can be used because the conker has constant acceleration ','optionD':'suvat equations can be used because the conker has changing acceleration '},{'text':'Select the correct set of suvat terms for a conker falling from a height of 2m. The conker is initially at rest and we can ignore air resistance. ','image':'?','answer':'?','optionA':'s = 2 m , u = ? Ms^-1 , v = 0 ms^-1 , a = 9.81 ms^-2 , t = ? ','optionB':'s = ? , u = 2 m , v = ? ms^-1 , a = 9.81 ms^-2 , t = ? ','optionC':'s = ? , u = 0 ms^-1 , v = 2 m , a = 9.81 ms^-2 , t = ? ','optionD':'s = 2 m , u = 0 ms^-1 , v = ? ms^-1 , a = 9.81 ms^-2 , t = ? '},{'text':'The conker, initially at rest, falls from a height of 2m and we know that the suvat terms are: ','image':'?','answer':'?','optionA':'s = 2 m , u = 0 ms-1 , v = ? ms-1 , a = 9.81 ms^-2 , t = ? ','optionB':'Which equation should we use if we want to calculate the final velocity? ','optionC':'v = u + at ','optionD':'s = ut + 1/2at^2 '},{'text':'s = ½(u + v)t ','image':'?','answer':'?','optionA':'v^2 = u^2 + 2as ','optionB':'Calculate the time taken for the conker to reach the ground when falling from a height of 2m. ','optionC':'0.54 s ','optionD':'0.64 s '},{'text':'0.32 s ','image':'?','answer':'?','optionA':'0.46 s ','optionB':'A ball is dropped from the top of a tower, it takes 6.00 seconds to hit the ground. Calculate the height of the building. You may assume that air resistance is negligible. g = 9.81 ms-2. Please give your answer to 3 significant figures. ','optionC':'29.4 m ','optionD':'90.9 m '},{'text':'151 m ','image':'?','answer':'?','optionA':'177 m',]

speed_velocity_acceleration_quiz_short_quiz.json

[{'text':'Identify the correct equation for the average speed: ','image':'?','answer':'?','optionA':'v = (total displacement) * (total time) ','optionB':'v = (total displacement) / (total time) ','optionC':'v = (total distance) * (total time) ','optionD':'v = (total distance) / (total time) '},{'text':'Identify the correct equation for average velocity? ','image':'?','answer':'?','optionA':'v = (total displacement)/(total time) ','optionB':'v = (total distance)/(total time) ','optionC':'v = (total displacement)*(total time) ','optionD':'v = (total distance)*(total time) '},{'text':'The units of speed are: ','image':'?','answer':'?','optionA':'m s^-1 ','optionB':'m s^1 ','optionC':'m s^-2 ','optionD':'m s^2 '},{'text':'The units of velocity are: ','image':'?','answer':'?','optionA':'m s^-1 ','optionB':'m s^1 ','optionC':'m s^-2 ','optionD':'m s^2 '},{'text':'Identify the correct equation for average acceleration? ','image':'?','answer':'?','optionA':'Average acceleration = (change in  displacement) * (change in time) ','optionB':'Average acceleration = (change in velocity) / (change in time) ','optionC':'Average acceleration = (change in displacement) / (change in time) ','optionD':'Average acceleration = (change in velocity) * (change in time) '},{'text':'Identify the correct equation for acceleration. Note that v = final velocity; u = initial velocity; and t = time.  ','image':'?','answer':'?','optionA':'a = (v-u)/t ','optionB':'a = (v+u)/t ','optionC':'a = (v-u)*t ','optionD':'a = (v+u)*t '},{'text':'Which is correct ? ','image':'?','answer':'?','optionA':'Acceleration is the rate of change of time ','optionB':'Acceleration is the rate of change of displacement ','optionC':'Acceleration is the rate of change of distance ','optionD':'Acceleration is the rate of change of velocity '},{'text':'The units of acceleration are: ','image':'?','answer':'?','optionA':'m s^-1 ','optionB':'m s^1 ','optionC':'m s^-2 ','optionD':'m s^2 '},{'text':'A train takes half an hour to travel between two stations. The displacement between stations is +10 km. Select the train’s average velocity ','image':'?','answer':'?','optionA':'30 km/h ','optionB':'20 km/h ','optionC':'minus 40 km/h ','optionD':'10 km/h'},]

star_formation_quiz_short_quiz.json

[{'text':'Identify the definition of a nebula ','image':'?','answer':'?','optionA':'The interstellar dust the permeates all of the universe ','optionB':'The inner-core of a star, in which helium is made from nuclear fusion ','optionC':'The outer layers of a star, which are made mostly of hydrogen gas ','optionD':'Huge clouds of dust and gas, where stars are born T '},{'text':'Nebulae are formed over million of years as dust and gas slowly come together due to gravitational attraction to form vast clouds. Identify how these clouds begin to collapse to form stars. ','image':'?','answer':'?','optionA':'Some regions in the nebula cloud are denser than other regions, and the cloud collapses around these denser regions T ','optionB':'The nebula has approximately uniform density and it collapses around the most central point ','optionC':'The collapse takes place around the edge of the nebula cloud as the temperature of the centre is too high for collapse to take place ','optionD':'The collapse occurs only when another nebula collides with the nebula cloud '},{'text':'Taking a single dense region and thinking about the gravitational collapse in that region, select the statement that describes what happens in terms of energy when the collapse takes place. ','image':'?','answer':'?','optionA':'Work is done by gravity, causing the gravitational potential energy to increase and the kinetic energy of the gas and dust to decrease ','optionB':'Work is done by the radiation pressure, causing the gravitational potential energy to decrease and the kinetic energy of the gas and dust to increase ','optionC':'Work is done by the radiation pressure, causing the gravitational potential energy to increase and the kinetic energy of the gas and dust to decrease ','optionD':'Work is done by gravity, causing the gravitational potential energy to decrease and the kinetic energy of the gas and dust to increase T '},{'text':'When regions of nebula collapse, work is done by gravity. The gravitational potential energy decreases and the kinetic energy of the gas and dust increases. Identify how these changes affect the temperature of the region. ','image':'?','answer':'?','optionA':'The temperature increases because temperature is inversely proportional to the average gravitational potential energy ','optionB':'The temperature increases because temperature is proportional to the average kinetic energy of the gas and dust particles T ','optionC':'The temperature increases because temperature is proportional to the average density of the region ','optionD':'The temperature increases because the radiation pressure increases during collapse '},{'text':'If a protostar has high enough temperature and pressure, nuclear fusion occurs. Identify the nuclei that are fused in this initial nuclear fusion. ','image':'?','answer':'?','optionA':'Hydrogen nuclei fuse to form helium nuclei T ','optionB':'Helium nuclei fuse to form hydrogen nuclei ','optionC':'Lithium nuclei fuse to form helium nuclei ','optionD':'Lithium nuclei fuse to form hydrogen nuclei '},{'text':'The temperature and pressure inside a protostar determines whether nuclear fusion begins. Identify why a high temperature and pressure is needed for nuclear fusion to begin ','image':'?','answer':'?','optionA':'In order to overcome the electron degeneracy force between hydrogen nuclei ','optionB':'In order to overcome the nuclear strong force between hydrogen nuclei ','optionC':'In order to overcome the electrostatic repulsion between hydrogen nuclei T ','optionD':'In order to overcome the nuclear weak force between hydrogen nuclei '},{'text':'Identify what determines whether the temperature and pressure inside a protostar reaches the required level for nuclear fusion to begin ','image':'?','answer':'?','optionA':'The amount of radiation pressure from the surrounding nebula ','optionB':'The amount of mass in and immediately around a protostar T ','optionC':'The total mass of the entire nebula ','optionD':'The distance between the nebula and the nearest black hole '},{'text':'Relative to a stars complete life-span, how long does a star remain at almost a constant size due to the equilibrium between the gravitational forces and the gas and radiation pressures? ','image':'?','answer':'?','optionA':'For a short amount of time ','optionB':'For the entire life cycle ','optionC':'For the majority of the stars life cycle T ','optionD':'? '},{'text':'Stars are said to be on their main sequence during the stable part of their lifespan. The mass of the star determines how long it remains stable. Stars that have low-mass cores remain stable for longer. Identify the statement that correctly describes why the star cores mass determines the length of stability ','image':'?','answer':'?','optionA':'The higher the cores mass, the more radiation pressure from the core. This triggers fusion in the outer layers of the star and increases the rate of hydrogen fusion ','optionB':'The higher the cores mass, the hotter the core. This increases the rate of hydrogen fusion T ','optionC':'The higher the cores mass, the higher gravitational force experienced by the stars matter. An increased gravitational force overcomes the radiation and gas pressure, causing the star to become unstable ','optionD':'?'},]

stopping_distance_quiz_short_quiz.json

[{'text':'Identify the correct statement: ','image':'?','answer':'?','optionA':'The thinking distance is the distance travelled by the vehicle after the driver has finished thinking how to respond to an obstacle. ','optionB':'The thinking distance is the distance that the driver thinks they should be from the vehicle in-front of them. ','optionC':'The thinking distance is the sum of the braking distance and the stopping distance. ','optionD':'The thinking distance is how far the vehicle travels while the driver is reacting. '},{'text':'Identify the correct statement: ','image':'?','answer':'?','optionA':'The reaction time is the time it takes for a vehicles airbags to deploy. ','optionB':'The reaction time is the time it takes for a person to react to a stimulus (e.g. the time it takes a driver to observe an obstacle and apply the brakes). ','optionC':'The reaction time is the braking distance minus the stopping distance. ','optionD':'The reaction time is the time taken for the vehicle to stop '},{'text':'A car is travelling at a constant speed towards an obstacle. Identify the correct statement: ','image':'?','answer':'?','optionA':'The smaller the reaction time, the smaller the thinking distance. ','optionB':'The smaller the reaction time, the larger the thinking distance. ','optionC':'The thinking distance is independent of the reaction time. ','optionD':'The larger the reaction time, the smaller the thinking distance. '},{'text':'A truck is travelling along a road and the driver notices a hazard. Identify the correct statement: ','image':'?','answer':'?','optionA':'The braking distance is the distance travelled by the car from when the driver first observes the hazard until the driver starts to apply the brakes.   ','optionB':'The braking distance is the distance travelled by the truck from when the driver first observes the hazard to when the truck has come to a complete halt. ','optionC':'The braking distance is the distance travelled by the truck from when the brakes are first applied to when the truck has come to a complete halt.  ','optionD':'The braking distance is distance between the truck and the hazard once the truck has come to a complete halt. '},{'text':'Identify the correct relationship between the following distances. ','image':'?','answer':'?','optionA':'Thinking distance = braking distance – stopping distance ','optionB':'Stopping distance = thinking distance + braking distance ','optionC':'Braking distance = thinking distance – stopping distance ','optionD':'Thinking distance + stopping distance = braking distance'},]

ultrasound_short_quiz.json

[{'text':'Ultrasound is defined to be: ','image':'?','answer':'?','optionA':'Sound that has a lower frequency than human hearing. ','optionB':'Sound that is greater in frequency than the upper limit of human hearing i.e. 20 kHz. ','optionC':'Frequency of sound in the human hearing range. ','optionD':'Sound that lies in the frequency range of 20-200 Hz. '},{'text':'A transducer is a device used to produce and detect ultrasound. It can be defined as: ','image':'?','answer':'?','optionA':'A device that collects and emits sound waves. ','optionB':'Any device that converts energy from one form to another. ','optionC':'A device that allows electric fields to be changed to sound. ','optionD':'A device that can image magnetic fields. '},{'text':'The intensity of the reflection of ultrasound waves that are detected by a transducer will depend on: ','image':'?','answer':'?','optionA':'The amplification process that is applied. ','optionB':'The difference in the acoustic properties of the tissues, the intervening tissue and the angle of the boundary. ','optionC':'The acoustics of the room the procedure is carried out in. ','optionD':'The quality of the transducer. '},{'text':'A major advantage of ultrasound imaging is: ','image':'?','answer':'?','optionA':'It has a better success rate of diagnosis. ','optionB':'The ability to image internal organs such as the lungs. ','optionC':'It is non-intrusive or doesnt involve ionising radiation. ','optionD':'It is cheap and quick. '},{'text':'Disadvantages of ultrasound include: ','image':'?','answer':'?','optionA':'Intrusive procedure. ','optionB':'Difficult to interpret compared to an X-ray, bone and air make imaging difficult. ','optionC':'Expensive to have done. ','optionD':'Uses ionising radiation and therefore is limited in its use. '},{'text':'Ultrasound transducers use piezoelectric crystals. When a voltage is placed across the crystal: ','image':'?','answer':'?','optionA':'Sparks are created that are converted to form an image ','optionB':'It vibrates. ','optionC':'A sound is made. ','optionD':'The size alters slightly and sets up a sound wave. '},{'text':'The size of the object that can be imaged is determined by: ','image':'?','answer':'?','optionA':'The size of the ultrasound machine. ','optionB':'Frequency. Only a select range can be used. ','optionC':'Wavelength. If the object is greater than the wavelength the diffraction becomes significant and no reflection of the wave occurs ','optionD':'Wavelength. If the object is less than the wavelength the diffraction becomes significant and no reflection of the wave occurs. '},{'text':'Acoustic impedance is: ','image':'?','answer':'?','optionA':'A property that describes how easily a specific frequency will pass through a material. ','optionB':'Limited ability to hear. ','optionC':'The ability to interfere with other sounds in the area. ','optionD':'A property that describes the ability to stop sound waves. '},{'text':'Calculate the acoustic impedance of fat. Given: fat density = 920 kgm^-3 and the velocity = 1450 ms^-1. ','image':'?','answer':'?','optionA':'7.5 � 10-7 ','optionB':'1.33 � 106 ','optionC':'4 � 106 ','optionD':'1.3 � 10-5 '},{'text':'Calculate the percentage of ultrasound energy reflected at a boundary of blood and muscle. Given: Iblood = 1.66 � 10^6, Imuscle = 1.65 � 10^6. ','image':'?','answer':'?','optionA':'9.13 � 10-6 percent ','optionB':'1 � 103 percent ','optionC':'9.13 � 10-4 percent ','optionD':'9 percent '},{'text':'A-mode scaning uses a single dimension transducer. It is best used in examining: ','image':'?','answer':'?','optionA':'The foetus. ','optionB':'The flow of blood in the heart. ','optionC':'Midline structures in the brain. ','optionD':'Bone breaks. '},{'text':'B-mode scans or brightness scans are used: ','image':'?','answer':'?','optionA':'To produce a 2D image of the body such as a foetus. ','optionB':'Examining midline structures in the brain. ','optionC':'To examine bone breaks. ','optionD':'To examine the brain. '},{'text':'Doppler ultrasound imaging is used to image parts of the body that: ','image':'?','answer':'?','optionA':'Pulsate or move ','optionB':'Are encased in bone ','optionC':'Show high contrast with a dye ','optionD':'Are broken'},]

uniform_motion_quiz_short_quiz.json

[{'text':'Select the correct statement: ','image':'?','answer':'?','optionA':'SUVAT equations are used when an object has changing acceleration ','optionB':'SUVAT equations are used when an object has a constant velocity and a non-zero acceleration ','optionC':'SUVAT equations are used when there is constant acceleration ','optionD':'? '},{'text':'The term SUVAT refers to 5 quantities: s, u, v, a, and t. Identify s from below. ','image':'?','answer':'?','optionA':'s is the speed ','optionB':'s is the distance ','optionC':'s is the displacement ','optionD':'s is the velocity '},{'text':'The term SUVAT refers to 5 quantities: s, u, v, a, and t. Identify the correct statement: ','image':'?','answer':'?','optionA':'u is the initial speed and v is the final speed ','optionB':'u is the final speed and v is the initial speed ','optionC':'u is the final velocity and v is the initial velocity ','optionD':'u is the initial velocity and v is the final velocity '},{'text':'Select the option that contains the correct SUVAT quantities and units ','image':'?','answer':'?','optionA':'s = displacement (m), u = final velocity (m s^-2), v = initial velocity (m s^-2), a = acceleration (m s^-2) and t = time (s) ','optionB':'s = displacement (m), u = initial velocity (m s^-1), v = final velocity (m s^-1), a = acceleration (m s^-2) and t = time (s) ','optionC':'s = distance (m), u = final velocity (m s^-1), v = initial velocity (m s^-1), a = acceleration (m s^-1) and t = time (s) ','optionD':'s = distance (m), u = initial velocity (m s^-1), v = final velocity (m s^-1), a = acceleration (m s^-2) and t = time (s) '},{'text':'Select the correct set of SUVAT equations: ','image':'?','answer':'?','optionA':'v = u - at; s = ut + 1/2at^2; s = ½(u - v)t; v^2 = u^2 + 2as ','optionB':'v = u + at; s = ut - 1/2at^2; s = ½(u + v)t; v^2 = u^2 - 2as ','optionC':'v = u - at; s = ut - 1/2at^2; s = ½(u + v)t; v^2 = u^2 + 2as ','optionD':'v = u + at; s = ut + 1/2at^2; s = ½(u + v)t; v^2 = u^2 + 2as '},{'text':'Only one of the below is a SUVAT equation. Which one? ','image':'?','answer':'?','optionA':'u = v + at ','optionB':'v = u - at ','optionC':'s = u + at ','optionD':'v = u + at '},{'text':'Only one of the below is a SUVAT equation. Which one? ','image':'?','answer':'?','optionA':'s = ut - 1/2at^2 ','optionB':'v = ut + 1/2at^2 ','optionC':'s = ut + 1/2at^2 ','optionD':'v = ut - 1/2at^2 '},{'text':'Only one of the below is a SUVAT equation. Which one? ','image':'?','answer':'?','optionA':'a = ½(u - v)t ','optionB':'s = ½(u + v)t ','optionC':'a = ½(u + v)t ','optionD':'s = ½(u - v)t '},{'text':'Only one of the below is a SUVAT equation. Which one? ','image':'?','answer':'?','optionA':'v^2 = u^2 - 2as ','optionB':'u^2 = ^v2 + 2as ','optionC':'v^2 = u^2 + 2as ','optionD':'u^2 = v^2 - 2ts '},{'text':'Select the correct set of SUVAT equations: ','image':'?','answer':'?','optionA':'v = u - at; s = ut + 1/2at^2; s = ½(u - v)t; v^2 = u^2 + 2as ','optionB':'v = u + at; s = ut - 1/2at^2; s = ½(u + v)t; v^2 = u^2 - 2as ','optionC':'v = u - at; s = ut - 1/2at^2; s = ½(u + v)t; v^2 = u^2 + 2as ','optionD':'v = u + at; s = ut + 1/2at^2; s = ½(u + v)t; v^2 = u^2 + 2as '},{'text':'What are the two SUVAT equations for calculating displacement? ','image':'?','answer':'?','optionA':'s = 1/2(u-v)t and s = ut - 1/2at^2 ','optionB':'s = 1/2(u+v)t and s = ut + 1/2at^2 ','optionC':'s = 1/2(u+v)t^2 and s = ut - 1/2at^2 ','optionD':'s = 1/2(u+v)t and s = ut^2 + 1/2at^2 '},{'text':'What are the two SUVAT equations for calculating the final velocity, v? ','image':'?','answer':'?','optionA':'v^2 = u - at and v = u^2 - 2as ','optionB':'v = u + at and v^2 = u^2 - 2as ','optionC':'v = u + at and v^2 = u^2 + 2as ','optionD':'v = u - at and v^2 = u^2 + 2as'},]

units_and_prefixes_quiz_short_quiz.json

[{'text':'Physicists often refer to SI units. Identify what the abbreviation SI stands for. ','image':'?','answer':'?','optionA':'International System of Units ','optionB':'System of Incidences ','optionC':'Standard Indices ','optionD':'Standard Units '},{'text':'The International System of Units, or SI units, have a number of base units, from which all other units can be built. How many SI base units are there? ','image':'?','answer':'?','optionA':'6 ','optionB':'7 T ','optionC':'8 ','optionD':'9 '},{'text':'State the letter of the row that contains all of the SI base units. ','image':'?','answer':'?','optionA':'Ampere, seconds, metre, kilogram, watts, mole, candela ','optionB':'Pascals, seconds, metre, kilogram, newtons, mole, candela ','optionC':'Watts, seconds, metre, kilogram, pascals, mole, candela ','optionD':'Ampere, second, metre, kilogram, kelvin, mole, candela T '},{'text':'Physicists write units in a couple of different ways. One way of writing the units of speed — metres per second — is m/s. But which of the following is the preferred way of writing the units of speed? ','image':'?','answer':'?','optionA':'m s^-2 ','optionB':'m s^1 ','optionC':'m s^-1 ','optionD':'m s^2 '},{'text':'Select the correct way to write J/s (Joules per Second) ','image':'?','answer':'?','optionA':'J s^-1 ','optionB':'J s^-2 ','optionC':'J s^1 ','optionD':'J s^2 '},{'text':'Select the correct way to write m/s2 (metres per second squared) ','image':'?','answer':'?','optionA':'m s^-2 ','optionB':'m s^1 ','optionC':'m s^-1 ','optionD':'m s^2 '},{'text':'Identify what SI derived units are: ','image':'?','answer':'?','optionA':'SI derived units are units derived from calculus ','optionB':'SI derived units are units concerning length, time and mass only ','optionC':'SI derived units are units concerning time and mass only ','optionD':'SI derived units are units made up of SI base units T '},{'text':'Harry says that there is no difference between using capitalised or uncapitalised letters when expressing quantities in physics. For example, he thinks that we can express speed = distance / time as both V = X / T and v = x/t. Is harry correct ? ','image':'?','answer':'?','optionA':'T ','optionB':'F ','optionC':'? ','optionD':'? '},{'text':'State the prefixes that represent the following: 10^-6 ','image':'?','answer':'?','optionA':'centi © ','optionB':'milli (m) ','optionC':'micro (u) ','optionD':'mega (M) '},{'text':'State the prefixes that represent the following: 10^-9 ','image':'?','answer':'?','optionA':'mega (M) ','optionB':'micro (u) ','optionC':'nano (n) ','optionD':'milli (m) '},{'text':'State the prefixes that represent the following: 10^9 ','image':'?','answer':'?','optionA':'mega (M) ','optionB':'micro (u) ','optionC':'giga (G) ','optionD':'kilo (k) '},{'text':'State the prefixes that represent the following: 10^6 ','image':'?','answer':'?','optionA':'mega (M) ','optionB':'micro (u) ','optionC':'giga (G) ','optionD':'kilo (k) '},{'text':'centi (c) means ','image':'?','answer':'?','optionA':'10^-3 ','optionB':'10^100 ','optionC':'10^-2 ','optionD':'10^2 '},{'text':'pico (p) means ','image':'?','answer':'?','optionA':'10^9 ','optionB':'10^6 ','optionC':'10^-9 ','optionD':'10^-12 '},{'text':'milli (m) means ','image':'?','answer':'?','optionA':'10^-3 ','optionB':'10^-6 ','optionC':'10^-2 ','optionD':'10^6'},]

vectors_short_quiz.json

[{'text':'A woman attempts to swim across a river at a speed of 0.5 m/s moving perpendicularly to the current which itself is moving at 1.2m/s. What is her resultant speed? ','image':'?','answer':'?','optionA':'1.5m/s ','optionB':'1.2m/s ','optionC':'1.3m/s T ','optionD':'0.5m/s '},{'text':'Which of these is a scalar? ','image':'?','answer':'?','optionA':'Velocity ','optionB':'Distance T ','optionC':'Displacement ','optionD':'Force '},{'text':'A woman attempts to swim across a river at a speed of 0.5 m/s moving perpendicularly to the current which itself is moving at 1.2m/s. The river is 40m wide. How far down the river will the woman be once she reaches the other side? ','image':'?','answer':'?','optionA':'57m ','optionB':'39m ','optionC':'96m T ','optionD':'43m '},{'text':'A woman attempts to swim across a river at a speed of 0.5 m/s moving perpendicularly to the current which itself is moving at 1.2m/s. In what direction does the swimmer travel whilst in the water? (angle from river bank) ','image':'?','answer':'?','optionA':'15.3 degrees ','optionB':'33.7 degrees ','optionC':'22.6 degrees T ','optionD':'45 degrees'},]

waves_quiz_short_quiz.json

[{'text':'You can hear a car horn around the corner of a building but not see the car because ','image':'?','answer':'?','optionA':'light reflection is incoherent from the other building but the sound reflection is coherent ','optionB':'the sound travel slowly, but light travels very fast ','optionC':'sound waves diffract around a corner but the light wavelengths do not diffract too much ','optionD':'sound waves pass through the walls, but light reflects off the wall '},{'text':'Constructive interference results in a wave whose amplitude is __________ any of the contributing waves. ','image':'?','answer':'?','optionA':'larger than ','optionB':'smaller than ','optionC':'same size as ','optionD':'double '},{'text':'According to the principle of superposition, displacement caused by combining two waves is equal to the ','image':'?','answer':'?','optionA':'average amplitude of the contributing waves ','optionB':'amplitude of the larger wave ','optionC':'equilibrium position ','optionD':'sum of the amplitudes of contributing waves '},{'text':'When two waves are in phase, ____________ interference will occur. ','image':'?','answer':'?','optionA':'constructive ','optionB':'destructive ','optionC':'no ','optionD':'little '},{'text':'In transverse waves, the motion of the particles is, ____________ to the direction of propogation of the wave. ','image':'?','answer':'?','optionA':'parallel ','optionB':'perpendicular ','optionC':'opposite ','optionD':'tangential '},{'text':'Which type of wave DOES NOT requie a medium to propagate? ','image':'?','answer':'?','optionA':'surface waves ','optionB':'transverse waves ','optionC':'electromagnetic waves ','optionD':'longitudinal waves '},{'text':'In longitudinal waves, the motion of the particles is ____________ to the direction of propogation of the wave. ','image':'?','answer':'?','optionA':'parallel ','optionB':'perpendicular ','optionC':'opposite ','optionD':'tangential '},{'text':'Which of the following is propagated by waves: ','image':'?','answer':'?','optionA':'matter ','optionB':'energy ','optionC':'both matter and energy ','optionD':'none of the above '},{'text':'The horizontal distance between successive crests of a wave is ','image':'?','answer':'?','optionA':'frequency ','optionB':'amplitude ','optionC':'period ','optionD':'wavelength '},{'text':'The highest point in a wave is ','image':'?','answer':'?','optionA':'crest ','optionB':'trough ','optionC':'frequency ','optionD':'wavelength '},{'text':'The maximum displacement from the mediums equilibrium position is called ','image':'?','answer':'?','optionA':'frequency ','optionB':'amplitude ','optionC':'period ','optionD':'wavelength '},{'text':'The time it takes two successive crests to pass the same place is is called ','image':'?','answer':'?','optionA':'frequency ','optionB':'amplitude ','optionC':'period ','optionD':'wavelength '},{'text':'When particles in the medium vibrate to and fro in the same direction of energy transport, then the wave is ','image':'?','answer':'?','optionA':'longitudinal ','optionB':'standing ','optionC':'torsional ','optionD':'transverse '},{'text':'When particles in the medium vibrate at right angles to the direction of energy transport, then the wave is ','image':'?','answer':'?','optionA':'longitudinal ','optionB':'standing ','optionC':'torsional ','optionD':'transverse '},{'text':'A sound wave is ','image':'?','answer':'?','optionA':'a transverse wave ','optionB':'a longitudinal wave ','optionC':'an electromagnetic wave ','optionD':'torsional wave '},{'text':'Two loudspeakers 5m apart emit the same tone of wavelength 0.5m. A listener stands at X, 12m from the right speaker and then moves to Y which is also 12m in front of the left speaker. She would hear ','image':'?','answer':'?','optionA':'Maximum at X, Maximum at Y ','optionB':'Maximum at X, Minimum at Y ','optionC':'Minimum at X, Minimum at Y ','optionD':'Minimum at X, Maximum at Y '},]

work_and_energy_short_quiz.json

[{'text':'What does the area under a force-displacement graph represent? ','image':'?','answer':'?','optionA':'Power Dissipated ','optionB':'Work Done T ','optionC':'Velocity ','optionD':'Energy of the System '},{'text':'A car, of mass 1300kg, accelerates uniformly from 5m/s to 14m/s. What is its change in kinetic energy? ','image':'?','answer':'?','optionA':'111kJ T ','optionB':'53.7kJ ','optionC':'5.85kJ ','optionD':'84.3kJ '},{'text':'Kinetic energy is ','image':'?','answer':'?','optionA':'mv^2 ','optionB':'mv ','optionC':'(1/2)mv ','optionD':'(1/2)mv^2 '},{'text':'A dam holds a mass of 4x10^9kg a height of 125m above a hydroelectric power station. If the water flows at a rate of 4x10^5 litres per second, what is the velocity of the water when it reaches the station? ','image':'?','answer':'?','optionA':'56.7m/s ','optionB':'53.1m/s ','optionC':'49.5m/s T ','optionD':'44.5m/s '},{'text':'A man walks at 0.5m/s to his destination 4km away. The total force resisting his motion (air-resistance, friction etc) is 40N. What is the total work done by the man in reaching his destination? ','image':'?','answer':'?','optionA':'160kJ T ','optionB':'120kJ ','optionC':'80kJ ','optionD':'200kJ '},{'text':'A man walks at 0.5m/s to his destination 4km away. The total force resisting his motion (air-resistance, friction etc) is 40N. What is the mans power? ','image':'?','answer':'?','optionA':'28W ','optionB':'16W ','optionC':'24W ','optionD':'20W '},{'text':'A cars engine provides a driving force of 500N and is 90 percent efficient. What is the total energy released by burning of petrol in 5 minutes of driving at 8m/s? ','image':'?','answer':'?','optionA':'3.89MJ ','optionB':'2.68MJ ','optionC':'4.21MJ ','optionD':'1.33MJ T '},{'text':'What is the work done in lifting a 1kg book a height of 1m onto a shelf? ','image':'?','answer':'?','optionA':'10J ','optionB':'1J ','optionC':'9.81J ','optionD':'2J '},{'text':'A bungee jumper of mass 60kg jumps from a bridge and falls 20m before the rope goes tight. How much gravitational potential energy does she lose? ','image':'?','answer':'?','optionA':'10.6kJ ','optionB':'11.8kJ T ','optionC':'10.3kJ ','optionD':'11.4kJ '},{'text':'A pendulum, made up of a light string, of length 50cm, with a 2kg bob at the end, is pulled aside so that the string makes an angle of 30 degrees to the vertical. The pendulum is released. Ignoring air-resistance find the velocity of the bob at the bottom of its swing ','image':'?','answer':'?','optionA':'1.31m/s ','optionB':'1.15m/s T ','optionC':'1.09m/s ','optionD':'1.23m/s '},{'text':'What is the formula for a change in gravitational potential energy for a small height (h)? ','image':'?','answer':'?','optionA':'(1/2)mgh^2 ','optionB':'mgh T ','optionC':'mgh^2 ','optionD':'(1/2)mgh '},{'text':'A bullet, of mass 0.25kg, is shot in the air at an initial velocity of 50m/s. If there is a constant resistive force of 5N what height does the bullet reach? ','image':'?','answer':'?','optionA':'41.9m T ','optionB':'63.5m ','optionC':'72.6m ','optionD':'57.4m '},{'text':'A ball of mass 0.5kg is falling down some stairs which have a height of 10m and length 25m. What is the work done by gravity on the ball? ','image':'?','answer':'?','optionA':'46.9J ','optionB':'47.5J ','optionC':'49.1J T ','optionD':'53.6J '},{'text':'A car, of mass 1,300Kg, accelerates uniformly from 5m/s to 14m/s. The resistive forces on the car can be ignored. It takes the car 8 seconds to complete this acceleration. What is the average power provided by the engine? ','image':'?','answer':'?','optionA':'13.9kW T ','optionB':'26.7kW ','optionC':'9.36kW ','optionD':'17.1kW '},{'text':'A ball of mass 2kg falls for 30m in the earths atmosphere. What is the work done by gravity on the ball? ','image':'?','answer':'?','optionA':'238J ','optionB':'155J ','optionC':'371J ','optionD':'589J T'},]

x_ray_attenuation_short_quiz.json

[{'text':'What does attenuation means with respect to electromagnetic radiation? ','image':'?','answer':'?','optionA':'The increase in intensity of electromagnetic radiation as it travels through matter or space ','optionB':'The decrease in intensity of electromagnetic radiation as it travels through matter or space T ','optionC':'The exponential increase in intensity of electromagnetic radiation as it travels through matter or space ','optionD':'The linear decrease in intensity of electromagnetic radiation as it travels through matter or space '},{'text':'There are 4 main causes of x-ray attenuation. The first is simple scattering. Select another: ','image':'?','answer':'?','optionA':'Photoelectric effect T ','optionB':'Diffusion ','optionC':'Diffraction ','optionD':'Feynman scattering '},{'text':'There are 4 main causes of x-ray attenuation. The first is simple scattering. Select another: ','image':'?','answer':'?','optionA':'Compton scattering T ','optionB':'Diffraction ','optionC':'Feynman scattering ','optionD':'Complex scattering '},{'text':'There are 4 main causes of x-ray attenuation. The first is simple scattering. Select another: ','image':'?','answer':'?','optionA':'Complex scattering ','optionB':'Diffraction ','optionC':'Feynman scattering ','optionD':'Pair production T '},{'text':'Simple scattering is best described by: ','image':'?','answer':'?','optionA':'An X-ray photon removes an electron from an atom and is scattered with reduced energy. ','optionB':'An X-ray photon interacts with the nucleus of an atom, disappears and creates an electron and a positron. ','optionC':'An X-ray photon interacts with an electron in an atom, but lacks sufficient energy to remove the electron, and scatters with no change in energy. ','optionD':'An X-ray photon is absorbed by an electron in an atom, and the electron is ejected from the atom. '},{'text':'The photoelectric effect is best described by: ','image':'?','answer':'?','optionA':'An X-ray photon removes an electron from an atom and is scattered with reduced energy. ','optionB':'An X-ray photon interacts with the nucleus of an atom, disappears and creates an electron and a positron. ','optionC':'An X-ray photon interacts with an electron in an atom, but lacks sufficient energy to remove the electron, and scatters with no change in energy. ','optionD':'An X-ray photon is absorbed by an electron in an atom, and the electron is ejected from the atom. '},{'text':'Compton scattering is best described by: ','image':'?','answer':'?','optionA':'An X-ray photon removes an electron from an atom and is scattered with reduced energy. ','optionB':'An X-ray photon interacts with the nucleus of an atom, disappears and creates an electron and a positron. ','optionC':'An X-ray photon interacts with an electron in an atom, but lacks sufficient energy to remove the electron, and scatters with no change in energy. ','optionD':'An X-ray photon is absorbed by an electron in an atom, and the electron is ejected from the atom. '},{'text':'Pair production is best described by: ','image':'?','answer':'?','optionA':'An X-ray photon removes an electron from an atom and is scattered with reduced energy. ','optionB':'An X-ray photon interacts with the nucleus of an atom, disappears and creates an electron and a positron. ','optionC':'An X-ray photon interacts with an electron in an atom, but lacks sufficient energy to remove the electron, and scatters with no change in energy. ','optionD':'An X-ray photon is absorbed by an electron in an atom, and the electron is ejected from the atom. '},{'text':'Which of the following shows Einstein�s photoelectric equation? ','image':'?','answer':'?','optionA':'hc = phi + KEmax ','optionB':'hf = phi - Kemax ','optionC':'hf = Kemax - phi ','optionD':'hf = phi + Kemax T '},{'text':'Which of the following does not effect the attenuation of x-rays ? ','image':'?','answer':'?','optionA':' The intensity of the X-rays ','optionB':'The type of material they are travelling through ','optionC':'The thickness of the material ','optionD':'The speed of the X-rays T '},{'text':'Which of the following are often used in contrast media? ','image':'?','answer':'?','optionA':'Lithium (Z = 3) ','optionB':'Beryllium (Z = 4) ','optionC':'Barium (Z = 56) T ','optionD':'Potassium (Z = 19)'},]

x_ray_production_short_quiz.json

[{'text':'What is thermionic emission? ','image':'?','answer':'?','optionA':'The process of emitting x-rays from a metal ','optionB':'The process of emitting electrons from a material when it is heated T ','optionC':'The process of accelerating charged particles using a potential difference ','optionD':'The process of heating a material when it is struck by electrons '},{'text':'What happens when the electrons strike the anode? ','image':'?','answer':'?','optionA':'The electrons are absorbed ','optionB':'X-rays are emitted and negligible heating to the anode occurs ','optionC':'X-rays are emitted and the anode heats up T ','optionD':'X-rays are emitted and the anode cools down '},{'text':'What is the shield around the inside of the x-ray tube made of? ','image':'?','answer':'?','optionA':'Aluminium ','optionB':'Glass ','optionC':'Tungsten ','optionD':'Lead T '},{'text':'What is the anode made of? ','image':'?','answer':'?','optionA':'Aluminium ','optionB':'Glass ','optionC':'Tungsten T ','optionD':'Lead '},{'text':'Which of the following expressions shows that the maximum energy of an x-ray photon of frequency f is the same as the maximum kinetic energy of the electron, charge q? ','image':'?','answer':'?','optionA':'hf = qV T ','optionB':'h/f = q/V ','optionC':'hf = q/V ','optionD':'h/f = qV '},{'text':'Which of the following will occur when the tube current is increased (assuming a constant p.d.)? ','image':'?','answer':'?','optionA':'The wavelength of the x-rays will decrease ','optionB':'The frequency of the x-rays will increase ','optionC':'The energy of the electrons will increase ','optionD':'The number of x-rays produced will increase T'},]

x_ray_scans_short_quiz.json

[{'text':'Which of the following are limitations of normal X-ray machines? ','image':'?','answer':'?','optionA':'Obtaining images can be very slow ','optionB':'Unable to differentiate overlapping material T ','optionC':'Too large for many uses ','optionD':'Poor contrast for bone '},{'text':'Which of the following are limitations of normal X-ray machines? ','image':'?','answer':'?','optionA':'Obtaining images can be very slow ','optionB':'Poor contrast for bone ','optionC':'Too large for many uses ','optionD':'Soft tissues are hard to image without the use of contrast agents T '},{'text':'What does CAT stand for? ','image':'?','answer':'?','optionA':'Computerised anatomical tomography ','optionB':'Cross-sectional anatomical tomography ','optionC':'Cross-sectional axial tomography ','optionD':'Computerised axial tomography T '},{'text':'What happens when the ring containing the X-ray tube and detector has rotated 360 degrees? ','image':'?','answer':'?','optionA':'The scan is complete. ','optionB':'The ring moves about 1 cm, so that the next image slice can be obtained. ','optionC':'The patient must move themselves into a new position, so that the next image slice can be obtained. ','optionD':'The bed moves about 1 cm, so that the next image slice can be obtained. T '},{'text':'What happens when the X-rays are collected by the detector? ','image':'?','answer':'?','optionA':'The detector sends signals to a computer, which produces a digital image from the detected X-rays. T ','optionB':'The detector sends a signal to the radiographer. ','optionC':'The detector produces an X-ray film which can be viewed by the radiographer. ','optionD':'The detector displays an image and sends the signals to a computer for storage. '},{'text':'Which of the following are advantages of using CAT scanning over traditional X-ray machines. ','image':'?','answer':'?','optionA':'CAT scans are quicker ','optionB':'CAT scanners can differentiate between soft tissues T ','optionC':'CAT scans deliver a lower dose of radiation to the patient ','optionD':'CAT scanners use shorter bursts of X-rays '},{'text':'Which of the following are advantages of using CAT scanning over traditional X-ray machines. ','image':'?','answer':'?','optionA':'CAT scans are quicker ','optionB':'CAT scans deliver much more data about the patient. T ','optionC':'CAT scans deliver a lower dose of radiation to the patient ','optionD':'CAT scanners use shorter bursts of X-rays'},]