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(Solution) - In Figure two tiny conducting balls of identical mass m and

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In Figure two tiny conducting balls of identical mass m and identical charge q hang from non-conducting threads of length L. Assume that ? is so small that tan ? can be replaced by its approximate equal, sin ?.


(a) Show that x = (q2L/2??0mg) 1/3 gives the equilibrium separation r of the balls.


(b) If L = 120cm, m = 10 g, and x = 5.0 cm, what is |q|?



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This question was answered on: Jul 11, 2017

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