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How do electromagnets differ from regular magnets? a) they can be turned on or off b) Their polarity can be reversed c) Their strength can be changed d) All of the above
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Jan 12, 2019
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How do electromagnets differ from regular magnets?
a) they can be turned on or off
b) Their polarity can be reversed
c) Their strength can be changed
d) All of the above
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Kemotoe
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it is D: All of the above
Austen Holland
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Jan 14, 2019
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their polarity can be reversed
Peaceful
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Jan 18, 2019
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