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Charge vs Potential in Spherical Conductor

two charges +...

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two charges + q and + 2q, are held in place on the x axis at the locations x-d andx + d respectively. A third charge, +3q, is released from rest on the y axis at y d(a) Find the electric potential at the initial location of the third charge. (b) Find the initial electricpotential energy of the third charge. (c) What is the kinetic energy of the third charge when ithas moved infinitely far away from the other two charges?

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