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Two charges charges of -2.1 micro-coulombs and a charge of +2.1 micro-coulombs are placed on the corners of an equilateral triangle where the length of a side is 44 cm as shown in the sketch below. What is the magnitude of the total electric field in the middle of the bottom side of the square? Answer in MN/C (1 x 106 N/C)?

Could not get the image to up load. the positive charge is on the left side of the triangle on the x axis and the negative charges on on the right hand side positivex axis. The positive y axis has the last charge.

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