34. Three charges, the outer two +q, and the inner one -9, are placed in a line, as shown below. The potential energy of these charges is
(A)
(B)
(C)
(D)
(E)
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統計: A(1), B(15), C(1), D(0), E(0) #3093875
統計: A(1), B(15), C(1), D(0), E(0) #3093875