Physics · 5054 · Paper 2 variant 15054/21/M/J/24
Start0 of 80 marks·0 of 47 parts attempted — start anywhere
- 1(a)(i)On Fig. 1.2, mark: • with the letter P one point where the ball accelerates • with the letter Q one point where the ball has constant speed.2 marks
- 1(a)(ii)Show your working.3 marks
- 1(b)Arrange these four speeds from slowest to fastest (slowest → fastest).1 mark
- 1(c)Name the force involved in the work done and describe the energy transfer.3 marks
- 1(d)On Fig. 1.1, draw an arrow to show the direction of the resultant force on the ball at point B.1 mark
- 2(a)(i)Explain, using ideas about particles, how the steam creates a pressure on the piston.2 marks
- 2(a)(ii)Explain why the pressure on the piston increases as the temperature of the steam increases.2 marks
- 2(b)Show your working.2 marks
- 2(c)(i)Calculate the momentum of the aircraft at the maximum speed.2 marks
- 2(c)(ii)Calculate the time taken for the aircraft to reach the maximum speed.2 marks
- 3(a)By referring to particles, describe the process of thermal conduction in a metal.2 marks
- 3(b)(i)State the melting temperature of ice in kelvin.1 mark
- 3(b)(ii)Explain why the temperature of the water is constant as the ice melts.2 marks
- 3(b)(iii)Calculate the energy required to warm the ice to its melting temperature.2 marks
- 3(b)(iv)Using your answer to (iii) and Fig. 3.2, determine the power of the heater used to warm the ice.2 marks
- 3(b)(v)Suggest one reason why.1 mark
- 4(a)(i)State what is meant by 'frequency'.1 mark
- 4(a)(ii)Show your working.2 marks
- 4(a)(iii)State one use of ultrasound.1 mark
- 4(b)(i)Describe, by referring to the movement of the particles in the wave, the difference between a longitudinal wave and a transverse wave.3 marks
- 4(b)(ii)State one source of waves that generates both longitudinal and transverse waves.1 mark
- 4(c)Explain why the radio waves in diagram A reach the house but the radio waves in diagram B do not reach the house.2 marks
- 5(a)Complete Fig. 5.1 by drawing the symbol for a fuse in the gap in the circuit.1 mark
- 5(b)(i)On Fig. 5.2 sketch a current−voltage graph for a filament lamp.1 mark
- 5(b)(ii)Explain the shape of the current−voltage graph drawn in (i).2 marks
- 5(c)Calculate the current at point P in the circuit shown in Fig. 5.1.3 marks
- 5(d)(i)Suggest a suitable fuse rating for the fuse.1 mark
- 5(d)(ii)Explain why a fuse rating much larger than the value suggested in (i) is not suitable.2 marks
- 5(d)(iii)Explain why it is necessary to connect a fuse in the live wire rather than the neutral wire or earth wire.1 mark
- 6(a)(i)State what happens to the motor if a stronger magnet is used.1 mark
- 6(a)(ii)On Fig. 6.1 mark and label: • the direction of the current in the coil • the direction of the magnetic field.1 mark
- 6(a)(iii)Explain why the coil turns.2 marks
- 6(b)(i)Indicate the direction of the magnetic field on the pattern that you draw.3 marks
- 6(b)(ii)Explain how the current in one wire causes a force on the other wire.2 marks
- 7(a)(i)State which two nuclei have the same number of protons.1 mark
- 7(a)(ii)State which two nuclei have the same number of neutrons.1 mark
- 7(a)(iii)State which two nuclei have the same number of nucleons.1 mark
- 7(b)(i)State what is meant by 'background radiation'.1 mark
- 7(b)(ii)Calculate the corrected count rate from the source.1 mark
- 7(b)(iii)Determine the reading on the counter 90 minutes later.2 marks
- 7(b)(iv)Suggest why your answer to (iii) is only an estimate.1 mark
- 7(c)Draw a line on Fig. 7.1 from each use of radiation to the type of radiation used.2 marks
- 8(a)Mark and label on Fig. 8.1 the positions of the three planets 110 days after the position shown in Fig. 8.1.3 marks
- 8(b)(i)Suggest why the gravitational field strength at the surface of Mercury is much smaller than at the surface of Venus.1 mark
- 8(b)(ii)Show your working.2 marks
- 8(c)State what is meant by a 'moon'.1 mark
- 8(d)Describe what happens to the Sun when the hydrogen runs out.3 marks