Physics · 5054 · Paper 2 variant 25054/22/M/J/23
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76 of the 80 marks on this paper count. The rest can't be checked automatically yet, so those parts can be read but not marked.
- 1(a)Describe the motion of the car shown in Fig. 1.1.2 marks
- 1(b)(i)Name two forces that cause the change in motion after t = 10 s.1 mark
- 1(b)(ii)Suggest why Fig. 1.1 is a curve after t = 10 s.1 mark
- 1(c)(i)Give the unit.2 marks
- 1(c)(ii)For the same 10 s interval and 1200 kg car, calculate the average resultant force exerted on it.2 marks
- 2(a)(i)State the name of the energy store in the scooter battery.1 mark
- 2(a)(ii)Describe, in terms of work done, the stages of energy transfer from the battery store to the scooter’s kinetic energy.2 marks
- 2(b)Calculate their total kinetic energy at 4.0 m/s.2 marks
- 2(c)(i)Define a kilowatt-hour.1 mark
- 2(c)(ii)Calculate the time for a full recharge in hours.2 marks
- 3(a)(i)Describe why rotating the tube changes the pressure of the gas at its sealed end.1 mark
- 3(a)(ii)Explain, using ideas about particles, why gas pressure decreases when its volume increases at constant temperature.3 marks
- 3(b)Calculate the gas pressure.3 marks
- 3(c)On Fig. 3.3 sketch pressure against volume as pressure falls from 2P₀ to ½P₀.2 marks
- 4(a)(i)State the lowest possible temperature on the Celsius scale and on the Kelvin scale.1 mark
- 4(a)(ii)Describe how the motion of its particles changes.2 marks
- 4(a)(iii)State what happens to its internal energy and temperature during melting.2 marks
- 4(b)(i)Calculate the increase in the water’s internal energy.2 marks
- 4(b)(ii)Using the same 300 g iron, 100 g water and 44 °C final temperature, calculate the specific heat capacity of iron in J/(g °C).2 marks
- 5(a)Underline two other transverse waves from this printed list: seismic P-waves, seismic S-waves, sound, X-rays.1 mark
- 5(b)(i)Calculate wave frequency and wavelength.3 marks
- 5(b)(ii)On Fig. 5.1 draw two crests after they pass the block to show diffraction.2 marks
- 5(b)(iii)Describe how to use the wooden bar to make a wave with a smaller wavelength.1 mark
- 5(b)(iv)Describe how a decrease in wavelength affects diffraction.1 mark
- 7(a)(i)Name two electromagnetic-spectrum components with shorter wavelength than ultraviolet radiation.1 mark
- 7(a)(ii)State one useful application of ultraviolet radiation.1 mark
- 7(a)(iii)State one kind of eye damage caused by ultraviolet radiation from the Sun.1 mark
- 7(b)(i)Name the angle of incidence marked 40°.1 mark
- 7(b)(ii)Using the 40° angle in Fig. 7.1, calculate the refractive index of the glass.2 marks
- 9(a)(i)Which of α, β and γ produces the strongest ionising effect?1 mark
- 9(a)(ii)Which of α, β and γ is deflected most by a magnetic field?1 mark
- 9(b)(i)Explain how this shows that the source emits β-particles and γ-radiation.3 marks
- 9(b)(ii)Explain why the readings in Fig. 9.1 and Fig. 9.2 cannot show whether the source emits α-particles.1 mark
- 9(c)Describe one way to move a radioactive source safely in a school laboratory.1 mark
- 10(a)(i)State what is meant by a “light-year”.1 mark
- 10(a)(ii)State the approximate diameter of the Milky Way in light-years.1 mark
- 10(b)(i)Using Fig. 10.1 and the word list (nebula, neutron star, protostar, red giant, supernova, white dwarf), complete the three blanks after the red-supergiant stage.2 marks
- 10(b)(ii)State the stage in a star’s life cycle when heavy elements form.1 mark
- 10(c)Explain one observation that supports the Big Bang Theory.4 marks · not checked yet