What will happen to a magnet if you drop it frequently
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Permanent magnets can lose their magnetism if they are dropped or banged on enough to bump their domains out of alignment. Can you turn something back into a magnet by banging on it in a specific way? How do you build a powerful electromagnet that will attract a large metal object from a distance of four inches away? Is the number of windings, voltage or current the most important factor in an electromagnet?
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