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August 31, 2014

Homework Help: physics

Posted by Anonymous on Saturday, January 23, 2010 at 11:14pm.

A charge of +4q is fixed to one corner of a square, while a charge of -9q is fixed to the opposite corner. Expressed in terms of q, what charge should be fixed to the center of the square, so the potential is zero at each of the two empty corners?

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