Question

A room with 3.1-m-high ceilings has a metal plate on the floor with V = 0V and a separate metal plate on the ceiling. A 1.1 gglass ball charged to 4.9 nC is shot straight up at 4.8 m/s .

How high does the ball go if the ceiling voltage is 3.2×10⁶ V ?

How high does the ball go if the ceiling voltage is −3.0×10⁶ V ?

Answer 1