Question: Metal spheres A and B are identical except sphere A has a charge of -4.0nC while sphere B has a charge of +3.0nC. If

Metal spheres A and B are identical except sphere A has a charge of -4.0nC while sphere B has a charge of +3.0nC. If the spheres are brought into contact, do electrons move from A to B or B to A? How many electrons are transferred?

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