The potential across the plates of a parallel-plate capacitor is 100 Volts and the separation between the plates is 0.02 m. The charge on the plates are +50 nC and -50 nC, respectively. How much energy is needed to slowly pull the plates apart so that the distance between the plates is now 0.06 m? Assume that the area of the plates and the charge on each plate do not change.
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