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A magnet is a type of metal that either attracts or repels another magnet. When they attract, one magnet's end has a positive charge and is touching the other one whose end has a negative charge. If they repel, they both have the same charges. Magnets are used in many ways. They can be used in MRIs, electromagnets, Maglev trains, and motors. An electromagnet is a magnet rubbed with very fast speed through a coil of wire. This generates electricity.

(Edward June 9, 2009)

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