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# An electron enters a parallel plate apparatus 10.0cm long and 2.0cm wide, moving horizontally at 8.0 10^7 m/s. (top plate is positive, electron is...

An electron enters a parallel plate apparatus 10.0cm long and 2.0cm wide, moving horizontallyat 8.0 ﾗ 10^7 m/s. (top plate is positive, electron is 1.0cm from each plate..) The potential difference between the plates is 6.0 ﾗ 10^2 V. Calculate...(a) the vertical deflection of the electron from its original path.(b) the velocity with which the electron leaves the parallel plate apparatus.----Im really confused with questions asking for vertical deflection...im not sure what formula to use..should i be using the formula for energy where U=mgh and solve for h? this is the only thing i can think of..any help would be great