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A metal sphere of radius 23 cm has a net charge of 9.0 x 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 250 V?
consider a tank containing 40.0 kg of water. neglecting the heat capacity of the tank how much heat in joules would be
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a 100W light bulb connected to a 12.0 V source experiences a voltage surge that produces 14.0V for a moment. By what percentage does its power output increase
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