Question :

What causes nickel and certain other metals to be magnetic? A. the motion of protons in their atoms B. the pattern of electrons in their atoms C. their atoms have more electrons than protons D. the influence of the earth's magnetic field Where is the magnetic field of a bar magnet the strongest? A. at the north and south poles B.between the north and south poles C.in the middle of the magnet D.next to the south pole

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