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Problem: The electron gun in a television tube is used to accelerate electrons with mass 9.109 × 10³¹ kg from rest to 2 × 10⁷ m/s within a distance of 7.3 cm. Assuming the electric field is constant, what electric field is required in the tube?

I need help to solve the above problem and the fundamental charge is qe. Answer in units of N/C.

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