Consider four metal bars as in the diagram below. The bars are numbered 1 throug

Question

Consider four metal bars as in the diagram below. The bars are numbered 1 through 4. The ends of each bar are labeled A and B, and the middle of each bar is labeled m. Assume that any objects that are magnets have their poles on the ends A and B. A student makes the following observations: (i) 1A attracts 2A (ii) 1A does not interact with 3m (iii) 1A repels 4B a) Classify the three objects as magnets, ferromagnets, or non-magnetic objects. Explain your reasoning. If you cannot classify some of the objects on the basis of the information given above, explain why not and describe experiments you could perform to help you classify the objects. b) How would 1A interact if it were brought near 4m? If it is possible to tell, what are the possibilities? Explain.

Explanation / Answer

(a)

1 - Magnet

2 - Ferromagnet

3 - Non - magnet

4 - Magnet

(b) 1A would be repelled by 4B and attracted by 4A when near to 4m

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