Question: (a) What would the net charges on the Sun and Earth have to be if the electric force instead of the gravitational force were responsible

(a) What would the net charges on the Sun and Earth have to be if the electric force instead of the gravitational force were responsible for keeping Earth in its orbit? There are many possible answers, so restrict yourself to the case where the magnitude of the charges is proportional to the masses.
(b) If the magnitude of the charges of the proton and electron were not exactly equal, astronomical bodies would have net charges that are approximately proportional to their asses. Could this possibly be an explanation for the Earth's orbit?

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