Physics · 5054 · Paper 2 variant 25054/22/O/N/23
Start0 of 80 marks·0 of 40 parts attempted — start anywhere
- 3(a)(i)Explain why the lamina experiences a downward weight force; its arrangement is in Fig. 3.1.1 mark
- 3(a)(ii)Calculate the lamina’s weight on Earth using Fig. 3.1.2 marks
- 3(b)(i)Using Fig. 3.1, calculate the moment of the weight about pivot H.2 marks
- 3(b)(ii)Describe its motion until it stops moving.3 marks
- 4(a)(i)Using Fig. 4.1, calculate the total pressure in the liquid at the bottom of the tube.3 marks
- 4(a)(ii)Using Fig. 4.1, calculate the force on the inside surface of the tube’s bottom.2 marks
- 4(b)(i)Describe what happens in the inverted tube when the sheet is removed.3 marks
- 4(b)(ii)Using Fig. 4.2, describe the measurement made with this apparatus and how it is used to calculate atmospheric pressure.2 marks
- 6(a)Using the loudspeaker context in Fig. 6.1, state what frequency means.2 marks
- 6(b)Explain whether the 800 Hz sound from the loudspeaker in Fig. 6.1 is audible to a human with healthy hearing.1 mark
- 6(c)Describe the motion of the cone in Fig. 6.1 and explain how it produces sound.3 marks
- 6(d)Explain why sound from those explosions does not reach Earth.2 marks
- 7(a)Complete Fig. 7.1 by drawing a thermistor symbol between terminals T₁ and T₂.1 mark
- 7(b)(i)Using Fig. 7.1, calculate the current in R when its resistance is 2.5 Ω and the voltmeter reads 0.40 V.2 marks
- 7(b)(ii)Using Fig. 7.1, calculate the power transferred in R when its resistance is 2.5 Ω and the voltmeter reads 0.40 V.2 marks
- 7(c)Explain what happens to the voltmeter reading in Fig. 7.1.2 marks
- 9(a)Describe the energy transfers as the cloud collapses to form a protostar.2 marks
- 9(b)(i)State how nuclei of isotopes of the same element differ.1 mark
- 9(b)(ii)Explain why hydrogen-3 cannot decay by alpha emission.1 mark
- 9(b)(iii)Complete the missing nuclide numbers in the beta-decay equation for hydrogen-3 to helium: ³₁H → ___β + ___He.2 marks
- 9(b)(iv)Explain how the nuclear reaction stops further collapse as the protostar becomes a stable star.3 marks
- 9(c)State which part of a star’s life cycle produces the heaviest elements.1 mark