Physics · 5054 · Paper 2 variant 25054/22/M/J/25
Start0 of 80 marks·0 of 46 parts attempted — start anywhere
- 1(a)(i)Draw a suitable line.2 marks
- 1(a)(ii)Calculate the average speed of the ball between time t = 0 and time t = 0.40 s.2 marks
- 1(a)(iii)Describe how to use the graph in Fig. 1.1 to determine the speed of the ball at time t = 0.40 s.2 marks
- 1(b)(i)Explain, in terms of the forces acting, why the acceleration decreases, and why it eventually becomes zero.3 marks
- 1(b)(ii)Describe the appearance of a distance–time graph when the acceleration of the ball is zero.1 mark
- 3(a)(i)Calculate the pressure exerted by the flat tyre on the road.2 marks
- 3(a)(ii)State how the area of the tyre in contact with the road changes.1 mark
- 3(b)(i)Define ‘momentum’.1 mark
- 3(b)(ii)Using ideas about momentum, explain why there is a force on the wall of the tyre as the particle collides with it.2 marks
- 3(c)Using ideas about particles, explain why the pressure increases.2 marks
- 4(a)Describe the motion of the air particles as the sound wave passes from the tuning fork to the microphone.2 marks
- 4(b)(i)State what is meant by ‘frequency’.1 mark
- 4(b)(ii)Calculate the frequency of the sound wave.2 marks
- 4(b)(iii)State how the sound heard by the student changes.1 mark
- 4(b)(iv)The trace obtained with the original tuning fork is shown.1 mark
- 4(c)(i)On Fig. 4.4, draw the three wavefronts after they pass through the gap.2 marks
- 4(c)(ii)State the name of the process involved as the wavefronts pass through the gap and reach P.1 mark
- 5(a)Describe all the changes to the circuit in Fig. 5.1 that are needed so that the meters produce readings that can be used to calculate the resistance of the length of wire.2 marks
- 5(b)(i)Calculate the resistance of the 9.0 cm length of wire.2 marks
- 5(b)(ii)Explain whether line Q is obtained with a length of wire that is longer or shorter than 9.0 cm.1 mark
- 5(b)(iii)Calculate the length of the wire used to obtain line Q.1 mark
- 6(a)Underline the most suitable fuse value for the heating circuit fuse, and explain your choice.3 marks
- 6(b)Describe what happens to a fuse when the current is too large.1 mark
- 6(c)(i)Calculate the current in the lighting circuit fuse when all three lamps are switched on.1 mark
- 6(c)(ii)Calculate the maximum number of additional lamps of type P that can now be connected in parallel to the lighting circuit.1 mark
- 6(d)State two advantages of using a trip switch rather than a fuse.2 marks
- 7(a)State the purpose of the split-ring commutator and the brushes.3 marks
- 7(b)Explain how you determined this direction.3 marks
- 7(c)State what happens to the rotation of the coil if the magnetic field and the current in the coil are both reversed at the same time.1 mark
- 7(d)(i)Give the unit of your answer.3 marks
- 7(d)(ii)Explain why the turning effect becomes smaller as the coil becomes more vertical.1 mark
- 8(a)Complete Table 8.1 with the purposes of concrete shielding, control rods and moderator.3 marks
- 8(b)Describe what causes the fission of a single nucleus of uranium-235 in the fuel rods, and describe what happens during the fission.3 marks
- 8(c)(i)State what is meant by ‘specific heat capacity’.2 marks
- 8(c)(ii)Suggest and explain whether the coolant should have a large or a small specific heat capacity.1 mark
- 9(a)Label each orbit.2 marks
- 9(b)Explain why the comet at position 3 cannot be seen from Earth when Earth is at position 5.1 mark
- 9(c)(i)State the name of the force that acts on the comet.1 mark
- 9(c)(ii)On Fig. 9.1, mark the direction of the force that acts on the comet at each of the four positions shown.1 mark
- 9(c)(iii)Explain your answer.2 marks
- 9(d)Show your working.3 marks