AQA GCSE Trilogy Physics Paper 2 Higher November 2020 question paper 8464/P/2H

Figure 1 shows five different metal samples.

A student placed a magnet close to each metal sample. Describe what happened.

Figure 2 shows a paper clip being attracted to a permanent magnet.

The paper clip in Figure 2 is not a permanent magnet. Explain what would happen if the paper clip was removed and brought close to the south pole of the permanent magnet.

Write down the equation that links gravitational field strength (g), mass (m) and weight (W).

The student added more paperclips to one end of the magnet. The maximum number of paperclips the magnet could hold was 20 Each paper clip had a mass of 1.0 g gravitational field strength = 9.8 N/kg Calculate the maximum force the magnet can exert.

A student investigated how the height of a ramp affects the acceleration of a trolley down the ramp. Figure 3 shows some of the equipment used.

Plan an investigation to determine how the height of the ramp affects the acceleration of the trolley.

Table 1 shows the results.

The first two results have been plotted on Figure 4.

Complete Figure 4. You should:

• label the axes

• plot the remaining results from Table 1

• draw a line of best fit.

Write down the equation that links acceleration (a), mass (m) and resultant force (F).

When the resultant force on the trolley was 0.63 N the acceleration of the trolley

Calculate the mass of the trolley.

Figure 5 shows a computer keyboard. There is a spring under each key.

The springs behave elastically when a force is applied. What is meant by elastic behaviour? Tick (✓) one box.

Suggest two properties that should be the same for each spring.

Figure 6 shows one of the keys and its spring.

The key must be pressed with a minimum force of 0.80 N before the key touches the switch. Calculate the spring constant of the spring in Figure 6.

Figure 7 shows a spring that has been hung from a support. The spring is stationary and has been stretched beyond its limit of proportionality.

Which two statements are true for the spring in Figure 7 ?

Tick (✓) two boxes.

Figure 8 shows a girl bowling a ball along a ten-pin bowling lane.

The girl is trying to knock down the ten pins at the end of the bowling lane.

Velocity is a vector quantity, speed is a scalar quantity. Describe what is meant by a vector quantity and a scalar quantity.

The bowling lane is horizontal. Explain why the bowling ball decelerates as it travels along the lane.

Figure 9 shows the bowling ball hitting one of the pins.

Write down the equation that links mass (m), momentum (p) and velocity (v).

The bowling ball has a velocity of 5.0 m/s when it hits the pin. The momentum of the bowling ball is 26 kg m/s Calculate the mass of the bowling ball.

Explain why the bowling ball slows down when it hits the pin. You should use ideas about momentum in your answer.

X-rays form part of the electromagnetic spectrum. Radiographers use X-rays to produce images of bones inside the body.

Explain why X-rays can be used to produce images of the bones inside the body.

Table 2 shows the effect of exposure to different doses of radiation.

During an X-ray a person receives a dose of 0.5 mSv The radiographer takes many X-ray images each day. Explain why the radiographer stands behind a protective screen when taking an X-ray image.

Radio waves form part of the electromagnetic spectrum. Figure 10 shows one use of radio waves.

Explain how electrical signals in the transmitter produce a signal in the receiver.

The speed limit on many roads in towns is 13.5 m/s Outside schools this speed limit is often reduced by one-third.

Calculate the reduced speed limit.

A reduced speed limit may reduce air pollution. Explain one other advantage of a reduced speed limit.

Figure 11 shows a car being driven at a constant speed past a speed camera.

The camera recorded two images of the car 0.70 s apart. The car travelled 14 m between the two images being taken. The maximum deceleration of the car is 6.25 m/s² Calculate the minimum braking distance for the car at the speed it passed the speed camera.

Figure 12 shows a delivery van full of packages.

The driver delivers all the packages. The empty van has a shorter stopping distance than the full van when driven at the same speed. Explain why.

A student clamped a wire between the poles of a permanent magnet. The student investigated how the force on the wire varied with the current in the wire. Figure 13 shows the equipment used.

The top pan balance was used to determine the force on the wire.

When the switch was closed the reading on the top pan balance increased. Explain why the increased reading showed that there was an upward force on the wire.

Table 3 shows the readings on the top pan balance with the switch open and with the switch closed.

Explain how the values in Table 3 can be used to determine the size of the force on the wire.

The student varied the current in the wire and calculated the force acting on the wire. Figure 14 shows the results.

The length of the wire in the magnetic field was 0.125 m Determine the magnetic flux density.