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

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 by0.00007%. With what force would two copper pennies, placed1.3m apart, repel each other? Assume that each coin contains3e^22 copperatoms. (Hint: A neutral copper atom contains 29 protons and 29 electrons.)

(From your answer, it should be obvious that the magnitude of the charge on a proton and the charge on an electron cannot possibly differ by as much as the given percentage.)

Explanation / Answer

F= K Q1Q2/r^2 plugin the values you get F= 1.7 X10^8 N

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