An advantage of using an electromagnet, instead of a regular magnet to move cars in a junk yard is then an electromagnet can easily be turned on and off. true or false. is it false? ive already posted this question once, but i got one person that thought it was true, and one thought i was correct with false. which is it?
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An advantage of using an electromagnet, instead of a regular magnet to move cars in a junk yard is t...
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