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A horizontal beam of electrons initially moving at 4.1 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel plates. The magnitude of the field is 1.60 104 N/C. (a) What is the direction of the field between the plates? up down right left (b) What is the charge per unit area on the plates? C/m2 (c) What is the vertical deflection d of the electrons as they leave the plates?

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