We are told that the magnitude of the negative charge on the electron is exactly equal to the magnitude of the postive charge on the proton. But is it? Suppose that these magnitudes differ from each other by 0.000040 %. Each copper coin contains 3 X 1022 copper atoms.
(a)With that slight difference, with what force would two copper coins, separated by 1.4 m, repel each other?
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