Electric force of repulsion
Question: How many electrons must be removed from each of two 4.6-kg copper spheres to make the electric force of repulsion between them equal in magnitude to the gravitational attraction between them?
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How many electrons must be removed from each of two 4.6-kg copper spheres to make the electric force of repulsion between them equal in magnitude to the gravitational attraction between them?
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What charge (magnitude and algebraic sign) should be fixed to one of the empty corners, so that the total electric potential at the remaining empty corner is 0 V?
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