We know that the negative charge on the electron and the positive charge on the proton are

Question:

We know that the negative charge on the electron and the positive charge on the proton are equal. Suppose, however, that these magnitudes differ from each other by 0.00010%. With what force would two copper coins, placed 1.0 m apart, repel each other? Assume that each coin contains 3 x 1022 copper atoms. What do you conclude?