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Charged Metal Sphere A charged metal sphere ofradius 11 cm has a net charge of2.0 10-8 C.

(a) What is the electric field at the sphere's surface?
(b) If V = 0 at infinity, what is the electric potentialat the sphere's surface?
(c) At what distance from the sphere's surface has the electricpotential decreased by 500 V?

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