Consider a charge Q1(+5.0μC) fixed at a site with another charge Q2(charge +3.0μC, mass 6.0μg) 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 6.2 J 5.5 J 7.1 J 3.4 J
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