Chemistry, 18.03.2021 02:50 brendaesme
The science class decides to build an electromagnet. They wrap a strand of wire around a large iron nail three times, and connect the wire to a battery. The magnet is strong enough to lift a two pound metal plate. The class wants to be able to lift a four pound plate with the electromagnet. What should they do?
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The science class decides to build an electromagnet. They wrap a strand of wire around a large iron...
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