Consider three charges 91, 91 and 93, each equal to q, at the vertices of an equilateral triangle of side 1. What is the force on a charge Q placed at the centroid of the triangle? 1. 3 4780 29 √3 29 으뜸 2. 2K 60 3. √3 4m 80 12 09 29 4. zero
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