A metal sphere of radius 16 cm has a net charge of 4.8 × 10-8 C. (a) What is the electric field at the sphere's surface? (b) If V = 0 at infinity, what is the electric potential at the sphere's surface? (c) At what distance from the sphere's surface has the electric potential decreased by 520 V? (a) Number Units (b) Number i Units (c) Number i Units

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