Physics · 5054 · Paper 2 variant 25054/22/M/J/24
Start0 of 80 marks·0 of 45 parts attempted — start anywhere
- 1(a)(i)State how the graph shows trolley B accelerates uniformly during the collision.1 mark
- 1(a)(ii)Using Fig. 1.2, explain how trolley B has a greater acceleration magnitude than trolley A’s deceleration magnitude during the collision.1 mark
- 1(a)(iii)From Fig. 1.2, calculate trolley B’s acceleration at t = 0.40 s, in m/s².2 marks
- 1(b)Using the collision speeds in Fig. 1.2, show that momentum is conserved.2 marks
- 1(c)Explain why the collision force is larger.2 marks
- 2(a)(i)Show that the water mass is approximately 6700 kg.2 marks
- 2(a)(ii)Define pressure.1 mark
- 2(a)(iii)Using the Fig. 2.1 pool depth 0.80 m and water density 1000 kg/m³, calculate pressure on the base due to the water, in Pa.2 marks
- 2(a)(iv)Using the water mass from 2(a)(i), calculate its final temperature.3 marks
- 2(b)(i)Explain, in terms of particle motion, why evaporation cools the Fig. 2.1 pool water.2 marks
- 2(b)(ii)State two environmental changes that increase evaporation from the Fig. 2.1 pool.1 mark
- 3(a)(i)Complete the two energy-store labels in Fig. 3.2: the Sun and the battery.2 marks
- 3(a)(ii)Why does the Fig. 3.1 solar charger take longer to charge the phone battery on a cloudy day?1 mark
- 3(b)Name and describe the three processes transferring energy from its outside surface.3 marks
- 3(c)Calculate the charge entering the battery, including its unit.3 marks
- 4(a)(i)State the angle of incidence at P, in degrees.1 mark
- 4(a)(ii)On Fig. 4.1 draw the normal at R and the correctly labelled angle of incidence there.2 marks
- 4(a)(iii)At Q in Fig. 4.1, state two conditions required for no light to refract from glass into air.2 marks
- 4(b)(i)Name one other electromagnetic radiation that can carry information through them.1 mark
- 4(b)(ii)State two advantages of glass fibres over copper wires for transmitting internet information.2 marks
- 6(a)State Ohm’s law.2 marks
- 6(b)Explain how Fig. 6.2 shows that Ohm’s law applies to this LDR.1 mark
- 6(c)Use numerical values from Fig. 6.2 to explain how light affects LDR resistance.2 marks
- 6(d)(i)Determine current in the fixed resistor.1 mark
- 6(d)(ii)Use Fig. 6.2 to calculate the cell e.m.f., in V.3 marks
- 7(a)(i)Using the compass polarity shown in Fig. 7.1, mark N and S on the bar magnet.1 mark
- 7(a)(ii)Describe how to use the Fig. 7.1 plotting compass on paper to trace the field line passing through P between the magnet’s poles.3 marks
- 7(a)(iii)Using the Fig. 7.1 compass, explain how to find the field direction at P.1 mark
- 7(b)(i)Explain why moving the magnet produces a current.2 marks
- 7(b)(ii)Describe the Fig. 7.2 magnet motion that produces alternating current of frequency 0.50 Hz.1 mark
- 7(b)(iii)How does the Fig. 7.2 centre-zero ammeter show the current is alternating rather than direct?1 mark
- 7(b)(iv)Why does increasing the frequency of the Fig. 7.2 alternating current also increase its magnitude?1 mark
- 9(a)Explain what spontaneous emission means.1 mark
- 9(b)Describe the composition of an alpha particle.2 marks
- 9(c)(i)Describe the structure of either a cloud chamber or a spark counter used to detect alpha particles, including a labelled drawing.3 marks
- 9(c)(ii)Using the cloud chamber or spark counter you chose in 9(c)(i), describe what shows alpha emission is random.1 mark
- 9(c)(iii)Calculate the isotope half-life.2 marks