Physics · 5054 · Paper 2 variant 15054/21/M/J/16
Start75 marks per sitting · Choose 2 Section B questions and one alternative route. Practice on optional routes is kept separate; sit a paper to track an exam score.
- 1(a)Explain, using ideas about the forces, why his initial downwards acceleration is 10 m / s2.2 marks
- 1(b)Explain why, comparing the upward air resistance with his 600 N weight.1 mark
- 1(c)(i)Determine his terminal speed from the graph.1 mark
- 1(c)(ii)Calculate the resultant force on him at 5.5 m/s.1 mark
- 4(a)Draw a line from each box on the left-hand side to show which expands the most and which expands the least.1 mark
- 4(b)(i)1Describe what is meant by its temperature range.1 mark
- 4(b)(i)2Describe what low sensitivity means for its scale.1 mark
- 4(b)(ii)State one change in the design of a thermometer that increases its sensitivity.1 mark
- 5(a)Complete Fig. 5.1 for sound and water-surface waves: give each wave’s vibration direction relative to energy transfer and identify its wave type.2 marks
- 5(b)(i)Determine the amplitude of the vibration at time = 0.25 s.1 mark
- 5(b)(ii)Describe how the graph shows that the frequency of the wave is constant.1 mark
- 10(a)(i)State what is meant by melting point.2 marks
- 10(a)(ii)For a liquid between its melting and boiling points, describe in molecular terms what changes when the liquid evaporates.3 marks
- 10(b)(i)Suggest where, in the apparatus shown in Fig. 10.1, evaporation occurs.1 mark
- 10(b)(ii)State and explain the advantage of having a vacuum between the two glass walls.3 marks
- 10(c)(i)State what is inside the bubbles.1 mark
- 10(c)(ii)1Calculate the thermal energy lost by the metal.3 marks
- 10(c)(ii)2Calculate the mass of nitrogen that boils away.2 marks
- 11(a)(i)Sketch and label a diagram of the arrangement of the apparatus.3 marks
- 11(a)(ii)State two changes to the apparatus that increase the induced current.2 marks
- 11(a)(iii)1State Lenz’s Law.2 marks
- 11(a)(iii)2Describe how Lenz’s Law applies in the experiment you described in (a)(i).2 marks
- 11(b)(i)1Calculate the current in its transmission wires.2 marks
- 11(b)(i)2Calculate the electrical energy supplied to the factory in one hour.2 marks
- 11(b)(ii)Explain why transmitting at this high voltage reduces energy loss in the lines.2 marks
- 12(a)The overall stopping distance of a cyclist is made up of two parts, as shown in Fig. 12.1: • the distance the cyclist travels during the reaction time of the cyclist (the thinking distance) • the distance the cyclist travels after the brakes are applied (the braking distance) State the energy change that occurs during braking.2 marks
- 12(b)(i)Using Fig. 12.2, determine the reaction time of the cyclist.1 mark
- 12(b)(ii)Using Fig. 12.2, calculate the thinking distance.2 marks
- 12(b)(iii)State how the braking distance is found using Fig. 12.2.1 mark
- 12(b)(iv)Draw the new speed–time graph.2 marks
- 12(b)(v)Explain why the wet surface increases that distance.3 marks
- 12(c)(i)Calculate force F on piston R.2 marks
- 12(c)(ii)Explain why.2 marks