Physics P2 Exam Qs

2024: 1.2. Describe the method (6)

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a

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2024: A child pushed a baby walker from a carpet onto a hard floor

Explain why the speed of the baby walker increased (2)

• friction decreased

• so resultant force increased

2024: Explain what happens to gear B when a child applies a force to gear A (2)

2024 (3)

2024

the distance is (directly) proportional to the time between the two waves arriving (at the seismometer)

2024: Explain how radio waves are produced at a specific frequency (2)

2024: Explain what happens to the braking force as the train decelerates (3)

2024: Explain how drinking alcohol would affect the stopping distance of a train (3)

Figure 10 shows a jar containing oil, vinegar and a piece of garlic

The garlic is at the boundary between the oil and the vinegar

Explain why there is upthrust on the garlic (4)

• Vinegar will have greater pressure than oil (it has a greater density)

• Pressure on bottom of garlic will be greater than pressure on top

• P = F/A so greater pressure on bottom = greater force acting on the bottom of the garlic compared to the top

• The resultant of these forces is upthrust

2023: The student wrote the following hypothesis:
‘The black-coloured flask will emit more infrared radiation than the silver-coloured flask during 10 minutes of cooling.’
Describe a method to test this hypothesis.

2023: Q1.5 (2)

2023:

2023: Explain why the temperature of brakes increases as they are used (2)

2023: What is an induced magnet? (1)

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2023: Explain how a flexible bumper of a car reduces the risk of injury to the people in the bumper car during the collision (3)

2023: Explain the effect of the Earth’s gravitational force on the motion of the Hubble Space Telescope (3)

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2023: The lamp is disconnected from the dynamo
Explain why the dynamo becomes much easier to turn (3)

2022

2022: Explain why a driver’s reaction time affects the thinking distance of a car (2)

2022: The average speed of a car between the cameras and the average velocity of the car between the cameras are different
Explain why (3)

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2022: The hailstone stops accelerating and reaches terminal velocity
Explain why the hailstone reaches terminal velocity (3)

2022: Explain the difference in maximum kinetic energy of a hailstone with a mass of 10g and a hailstone with a mass of 20g (3)

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1 nm

2022: What is meant by centre of mass (1)

the point from which weight may be considered to act
or
the point where the mass appears to be concentrated

2022: A balance contains a spring that compresses when fruit are placed on the balance
Explain one property of the spring that makes it suitable for use in the balance (2)

2022: Compare the formation and life cycles of stars with a similar mass to the sun to stars with a much greater mass than the sun (6)

2022: Describe what is meant by red-shift (2)

2022: Explain how Figure 11 provides evidence for the Big Bang theory (2)

2022: The input pd causes an alternating current
Explain why there is an alternating current in the output when the transformer is connected to a circuit (3)

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2021

2021: Explain what is meant by elastically deformed (2)

• will return to its original shape/length

• when the force is removed

2021: Describe a method the student could use to obtain the results given in Figure 4
You should include a risk assessment for one hazard in the investigation
Your answer may include a diagram (6)

2021: Explain why a star is stable whilst in the main sequence stage of its life cycle (2)

2021: A main sequence star in a distant galaxy is the same size and mass as the Sun
Describe what will happen to the star between the main sequence stage and the end of the star’s life cycle

You should include the names of the stages in the life cycle of the star (3)

2021

2021: Describe the difference between transverse and longitudinal waves (2)

2021: What is the advantage of repeating measurements and calculating a mean? (1)

• reduce the effect of random errors

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friction

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2021: Explain how a moving-coil loudspeaker produces a sound wave (4)

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2021: The teacher closes the switch and the copper rod accelerates.
Explain how Fleming’s left-hand rule can be used to predict the direction in which the copper rod will move (5)