Four point charges have the same magnitude of 2.53 x 10-12, Ask an Expert

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Four point charges have the same magnitude of 2.53 x 10^-12 C and are fixed to the corners of a square that is 4.15 cm on a side. Three of the charges are positive and one is negative. Determine the magnitude of the net electric field that exists at the center of the square. UNITS In N/C

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