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At some instant the velocity components of an electron moving between two charged parallel plates are vx = 1.90 105 m/s and vy = 3.00 103 m/s. Suppose that the electric field between the plates is given by = (120 N/C).

(a) What is the electron's acceleration in the field?

(b) What is the electron's velocity when its x coordinate has changed by 4.2 cm?

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