Consider a charge Q1 (+5.0 μC) fixed at a site with another charge Q2 (charge +3.0 μC, mass 6.0 μg ) moving in the neighboring space. Evaluate the potential energy of Q2 when it is 4.0 cm from Q1. (Note: Q1 is held fixed in its place. ) k = 9.00×109 N. m2/C2 7.1 J 3.4 J 5.5 J 6.2 J
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