QUESTION 4 A 15.0 kev proton enters a uniform electric field of magnitude 360 V/m present in a rectangular region of length L- 30.0m and with W = 8.0 m, as shown in the figure below. With what kinetic energy does the proton emerge from the electric held? E W A. 25.8 kev B. 10.8 kev OC. 15.4 keV D. 0.36 kev E. None of the given options

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