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A bead with a mass of 0.020 and a charge of 15nC is free to slide on a vertical rod. At the base of the rod is a fixed 20nC charge.
A bead with a mass of 0.020 and a charge of 15nC is free to slide on a vertical rod. At the base of the rod is a fixed 20nC charge.In equilibrium, at what height above the fixed charge does the bead rest?