A 3.35×10−5 kg3.35×10−5 kg positively charged ball with charge ?=7.75×10−6 Cq=7.75×10−6 C is resting on a flat, frictionless horizontal surface. For a time of ?=0.255 s,t=0.255 s, a constant electric field of magnitude ?=635 N/CE=635 N/C is directed vertically to the ball, which makes the ball rise to a height of ?.d. After this time, the electric field is turned off and the ball returns to the surface. Calculate, in meters, how high the ball is lifted off of the surface during the time ?.

A 3.35×10−5 kg3.35×10−5 kg positively charged ball with charge ?=7.75×10−6 Cq=7.75×10−6 C is resting on a flat, frictionless horizontal surface. For a time of ?=0.255 s,t=0.255 s, a constant electric field of magnitude ?=635 N/CE=635 N/C is directed vertically to the ball, which makes the ball rise to a height of ?.d. After this time, the electric field is turned off and the ball returns to the surface. Calculate, in meters, how high the ball is lifted off of the surface during the time ?.