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a) Suppose 7.0 × 10-19 J of work is done to move the nucleus of an...

a) Suppose 7.0 × 10-19 J of work is done to move the nucleus of an atom from some very far away position to a location near a fixed positive charge. What would the electric potential energy of the nucleus be? b) If the nucleus is now released, how much kinetic energy will it have when it returns to a very far away position?

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