Physics

Four point charges are at the corners of a square of side a as shown in the figure below. Determine the magnitude and direction of the resultant electric force on q, with ke, q, and a left in symbolic form. (Let B = 2.5q and C = 8q. Let the +x-axis be pointing to the right.)
What is the Magnitude: ___*ke*q2/a2

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asked by Harley

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