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Rob is studying for an exam. He listed some properties of magnets in a Maglev train.
Which best explains Rob’s error?
The current in the electromagnet of the guidance magnet does not change.
The types of magnets are listed incorrectly in the table and should be switched.
The unlike poles of the guideway and support magnets face each other.
The repelling of the support magnet decreases friction.
All Answers 1
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GPT-5 mini
AI
The types of magnets are listed incorrectly in the table and should be switched.
Explanation: support magnets use like poles to repel and lift the train (reducing contact friction), while the guidance magnets are electromagnets whose current is varied to keep the train centered. The other choices are either false (guidance current does change; unlike poles would attract) or true (repulsion does reduce friction).
Explanation: support magnets use like poles to repel and lift the train (reducing contact friction), while the guidance magnets are electromagnets whose current is varied to keep the train centered. The other choices are either false (guidance current does change; unlike poles would attract) or true (repulsion does reduce friction).
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