In Figure two tiny conducting balls of identical mass m and identical charge q hang from non-conducting
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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 θ is so small that tan θ can be replaced by its approximate equal, sin θ.
(a) Show that x = (q2L/2πε0mg) 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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Related Book For
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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