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A room with 3.0m high ceilings has a metal plate on the floor with V = OV and a separate metal plate on the ceiling. A 1.0
g glass ball charged to +4.9 nC is shot straight up at 5.0 m/s. How high does the ball go if the ceiling voltage is (a) 3.0 x 1
0^6 and (b) -3.0 x 10^6? Solve with Conservation of Energy please!

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