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An 'infinite' plane has surface charge density n= -3x10^-6 C/m2 a) what is the acceleration of...

An 'infinite' plane has surface charge density n= -3x10^-6 C/m2

a) what is the acceleration of a proton near the plane?

b) If a proton leaves the surface with vi = 2x10^6 m/s, how far does it travel before stopping?

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