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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
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. The ro... show full transcript
Worked Solution & Example Answer: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 separates steel cans from aluminium cans using the magnetic properties of the materials. Steel is magnetic, which means it is attracted to the magnet on the roller. When the cans travel along the moving belt, the steel cans stick to the magnet and are carried around, eventually falling into container A. In contrast, aluminium cans are non-magnetic and do not stick to the magnet, allowing them to fall freely 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 only when the toy brick gets near because the strength of the magnetic field is stronger when the two magnets are in close proximity. As the toy brick approaches, the magnetic force increases, creating enough attraction or repulsion to overcome any static friction, causing the toy car to move.
Step 4
Describe how the student could develop this investigation to test this theory.
Answer
To investigate the student's theory, the student could follow these steps:
- Change distance: Move the toy brick towards the toy car gradually until the car starts to move, measuring the distance at which this occurs.
- Repeat: Conduct the same experiment using two magnets stacked together, measuring the distance again to compare the results.
- Record data: Keep track of the distances for both configurations (one magnet, two magnets) to analyze any differences in movement.
- Detail: Describe each step taken during the procedure and where the measurements were recorded. Include a conclusion on whether the theory is supported by the results based on what was observed.