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17 September, 16:48

Why might an electromagnet be used to pick up old cars in junk yards?

a. Electromagnets are inexpensive and easily create revenue.

b. Electromagnets are powerful and can be turned on and off easily.

c. Electromagnets are easy to operate and can be run by cheap labor.

d. Electromagnets are versatile and can pick up any metallic objects in the yard.

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  1. 17 September, 17:04
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    I think the correct answer would be that because electromagnets are powerful and can be turned off and on anytime. Electromagnet is a magnet in which the magnetic field is made by the electric current that is induced to the system.
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