Question: An electron that is a certain distance from a proton is acted on by an electrical force. (a) If the electron were moved twice that

An electron that is a certain distance from a proton is acted on by an electrical force.
(a) If the electron were moved twice that distance away from the proton, would the electrical force be (1) 2, (2) 1/2, (3) 4, or (4) 1/4 times the original force? Why?
(b) If the initial electric force is F, and the electron were moved to one-third the original distance toward the proton, what would be the new electrical force in terms of F?

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