← all papers · Physics · 0625 · Paper 40625/04/SP/23

Practice

1. Question 18 marks
   • 1(a)Calculate the acceleration of the vehicle at time t = 30 s.3 marks
   • 1(b)Using ideas about forces, explain why any change in the acceleration has occurred.2 marks
   • 1(c)Determine the distance travelled by the vehicle between time t = 120 s and time t = 160 s.3 marks
2. Question 27 marks
   • 2(a)Complete the definitions by giving the name of each quantity.2 marks
   • 2(b)(i)Calculate the momentum of the ball as it leaves the golf club.2 marks
   • 2(b)(ii)Calculate the average resultant force acting on the ball while it is in contact with the golf club.2 marks
   • 2(b)(iii)State the type of energy stored in the ball during its contact with the golf club.1 mark
3. Question 37 marks
   • 3(a)(i)State the name of the process which releases energy in the Sun.1 mark
   • 3(a)(ii)Describe what happens in this process.2 marks
   • 3(c)State two advantages and two disadvantages of using solar cells to generate electrical power.4 marks
4. Question 47 marks
   • 4(a)Using ideas about momentum, explain how the atoms of helium produce a force on the wall of the balloon.3 marks
   • 4(b)(i)Explain why the pressure in the balloon decreases as the balloon rises.2 marks
   • 4(b)(ii)Calculate the pressure of the helium when its volume is 12 m³.2 marks
5. Question 56 marks
   • 5(a)Compare the arrangement and motion of the particles in ice and in liquid water.2 marks
   • 5(b)(i)Calculate the mass of ice on the lake.2 marks
   • 5(b)(ii)Calculate the change in energy as the temperature falls.2 marks
6. Question 64 marks
   • 6(a)(ii)Underline three of the terms below that describe the image shown in Fig. 6.2.2 marks
   • 6(b)On Fig. 6.3, draw the path of the blue light as it enters, passes through and leaves the prism.2 marks
7. Question 77 marks
   • 7(a)State a typical value for the speed of sound in air.1 mark
   • 7(b)Using your value for the speed of sound in air, calculate the frequency of the sound wave.2 marks
   • 7(c)Describe and explain how to use ultrasound to determine the size and position of the bubble inside the metal block.4 marks
8. Question 86 marks
   • 8(a)Calculate the combined resistance between Y and Z.4 marks
   • 8(b)Calculate the potential difference (p.d.) across the 8.0 Ω resistor.2 marks
9. Question 97 marks
   • 9(a)Referring to the charge on the ball, explain why the ball moves to the positive plate after touching the negative plate.2 marks
   • 9(b)State which particles move when there is a current and state the direction in which they move through the sensitive ammeter.2 marks
   • 9(c)Calculate the current shown on the sensitive ammeter.3 marks
10. Question 106 marks
    • 10(a)(i)Complete the nuclear equation for this decay.2 marks
    • 10(a)(ii)Explain why beta (β) emitters or gamma (γ) emitters are not used in smoke detectors.1 mark
    • 10(b)Calculate the time required for this decay.3 marks
11. Question 116 marks
    • 11(a)Describe and explain how a stable star is formed.3 marks
    • 11(b)Describe and explain what can be deduced from cosmic microwave background radiation (CMBR).3 marks
12. Question 124 marks
    • 12(a)Calculate the number of turns in the secondary coil.2 marks
    • 12(b)Calculate the current in the primary circuit.2 marks