Two parallel, charged plates, both of length L= m create
an electric field between them as shown here. At a distance
a= m from the end of the plates is a screen. An
electron is shot into a region where an electric field exists, as shown here.
The electron is shot in horizontally at v= m/s, midway
between the plates. The electric field has a strength of
E= N/C. Assuming the electron doesn't hit the upper
plate, how high above the "midway distance between the plates" will the
electron hit the screen?