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question 1
why are electromagnets used in metal scra...
Chemistry, 13.10.2019 03:30 jholland03
Stion completion status:
question 1
why are electromagnets used in metal scrap yards?

they are weak permanent magnets.
they are temporary magnets, so eventually the metal just falls off.
they are very powerful permanent magnets.
they are temporary magnets, so they can be turned on and off.
Answers: 1
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