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5 (a) Figure 13 shows a part of a machine used to separate steel cans from aluminium cans - Edexcel - GCSE Physics - Question 5 - 2020 - Paper 1
Question 5
5 (a) Figure 13 shows a part of a machine used to separate steel cans from aluminium cans. The cans are carried along a moving belt. The belt goes around a roller. ... show full transcript
Worked Solution & Example Answer:5 (a) Figure 13 shows a part of a machine used to separate steel cans from aluminium cans - Edexcel - GCSE Physics - Question 5 - 2020 - Paper 1
Step 1
Explain how this machine separates the steel cans from the aluminium cans.
Answer
The machine utilizes the properties of different materials. Steel is magnetic, allowing it to be attracted to the magnet on the roller, while aluminium, being non-magnetic, does not stick. As the cans move along the belt, the steel cans are drawn towards the roller and separate into container A, while the aluminium cans fall into container B.
Step 2
Step 3
Explain why the toy car starts to move only when the toy brick gets near to the toy car.
Answer
The toy car starts to move because the strength of the magnetic field is stronger when the toy brick is close to the car. As the distance reduces, the magnetic forces increase, allowing the magnet on the toy brick to repel the magnet on the toy car, causing it to move.
Step 4
Describe how the student could develop this investigation to test this theory.
Answer
The student can follow these steps to investigate:
- Move the brick towards the car, adjusting the distance until the car just starts to move.
- Measure the distance from the car/magnet each time it starts to move.
- Repeat the experiment with two magnets stacked together and compare the distances to see if the car moves at a closer range.
- Include details on how to attach the second magnet, measure distances accurately, and take several readings to calculate an average.
- Finally, conclude or predict whether having two magnets affects the magnetic force and at which distance it works best.