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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= 1/2mv2 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 1.5x107 How do I use the conservation of energy to get this answer? Thanks for your help
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