Posted by Lucas on Wednesday, February 24, 2010 at 11:00pm.
Use F = E e = m a, and solve for the field E.
e is the electron charge and m is the electron mass. Use Coulombs and kg to get an answer for E in Volts per meter (which is the same as Newtons per Coulomb)
You will need to solve for the acceleration, a, first.
Use v = sqrt(2 a X) when solving for the acceleration.
X = 0.12 m
v = 5*10^7 m/s
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