CAPE Physics Unit 1 · May/June 2021 · Paper 2

29 questions and parts from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. 1(a)5 marksOn the grid provided in Figure 1 on page 7, plot a graph of velocity versus time. Draw the best smooth curve through the points.
2. 1(b)8 marksDescribe the motion of the parachutist from jumping out of the airplane to landing, explaining what happens during each specified time interval: 0–20 s, 20–40 s, 40–45 s, 45–60 s, and 60–62 s.
3. 1(c)2 marksIdentify the two major forces acting on the parachutist during the intervals 20–40 s and 45–60 s, and state the relationship between these forces.
4. 1(d)(i)4 marksExplain why the car is accelerating even though its speed remains constant.
5. 1(d)(ii)3 marksCalculate the centripetal acceleration of the car.
6. 1(d)(iii)2 marksCalculate the normal reaction force acting on the car.
7. 1(e)(i)2 marksDefine the term 'geostationary satellite'.
8. 1(e)(ii)2 marksState the physical characteristics of the Earth that determine the fixed orbital radius, r, for a geostationary satellite.
9. 1(e)(iii)2 marksState two applications of geostationary satellites.
10. 2(a)(i)1 markDefine the term amplitude.
11. 2(a)(ii)1 markDefine the term period.
12. 2(b)2 marksState the two conditions necessary for simple harmonic motion (SHM).
13. 2(c)(i)4 marksCalculate the mass of the wooden block.
14. 2(c)(ii)3 marksCalculate the angular frequency of the oscillations.
15. 2(c)(iii)3 marksCalculate the maximum velocity of the wooden block.
16. 2(d)(i)5 marksThe amplitude of oscillation decreases gradually by 0.2 cm with each oscillation. On the axes in Figure 4, sketch the first five oscillations.
17. 2(d)(ii)3 marksIdentify the phenomenon depicted by the waveform sketched in (d)(i) and state two real-life situations where it occurs.
18. 2(e)(i)2 marksDefine the term 'threshold of hearing' and state its value for a healthy young adult.
19. 2(e)(ii)1 markWrite an equation showing the relationship between sound intensity level in dB and the threshold of hearing, I₀.
20. 2(e)(iii)2 marksAt a party, the average sound intensity level is 90 dB. Determine the intensity in W m⁻².
21. 2(e)(iv)3 marksA student attends the party for 3 hours. Calculate the amount of energy incident on the eardrum if its surface area is 0.5 cm².
22. 3(a)3 marksState three assumptions of the kinetic theory of ideal gases.
23. 3(b)(i)3 marksCalculate the average translational kinetic energy of one molecule of Ne gas.
24. 3(b)(ii)3 marksCalculate the number of molecules of Ne gas in the metal sphere.
25. 3(b)(iii)4 marksCalculate the root mean square (r.m.s.) speed of the Ne molecules.
26. 3(c)(i)1 markComplete Row 3 of Table 2 by calculating and filling in the values for T⁴ / K⁴ (×10⁹).
27. 3(c)(ii)4 marksOn the grid provided in Figure 5 on page 17, plot a graph of P versus T⁴. Draw the line of best fit through the points.
28. 3(c)(iii)5 marksDetermine the gradient of the graph plotted on page 17 and hence deduce the surface area of the metal sphere.
29. 3(d)7 marksDescribe the mechanism of thermal conduction in metallic conductors.