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## Homework Statement

A pair of charged conducting plates produces a uniform field of 12,000 N/C directed to the right, between the plates. The separation of the plates is 40 mm. In the figure, an electron is projected from plate A, directly toward plate B, with an initial velocity of 2.0 x 10^7 m/s.

A) The velocity of the electron as it strikes plate B is closest to:

## Homework Equations

Conservation of energy

## The Attempt at a Solution

Equation: qV= 1/2mv

^{2}

My answer: 1.3x10^7m/s

I tried the equation above based on what I gathered from my book but I am suppose to get 1.5x10

^{7}How do I use the conservation of energy to get this answer? Thanks for your help

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