Homework Help: physics

Posted by Mike on Thursday, February 9, 2012 at 5:26pm.

Four charges with equal magnitudes of 6.50 x 10-15 C are placed at the corners of a rectangle. The lengths of the sides of the rectangles are 4.07 cm and 5.28 cm. Find the magnitude of the electric field at the center of the rectangle, assuming that three charges have the same sign and the remaining one has the opposite sign.

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