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20 Nov 2019
In the neck of the picture tube of a certain black-and-white television set, an electron gun contains two charged metalic plates 3.05 cm apart. An electric force accelerates each electron in the beam from rest to 9.60% of the speed of light over this distance. (Ignore the effects of relativity in your calculations.) Determine the kinetic energy of the electron as it leaves the electron gun. Electrons carry this energy to a phosphorescent material on the inner surface of the television screen, making it glow. 2360 Your response differs from the correct answer by orders of magnitude. J For an electron passing between the plates in the electron gun, determine the magnitude of the constant electric force acting on the electron. N Determine the electron's acceleration as it passes between the plates. m/s2 Determine the time of flight as the electron passes between the plates. s
In the neck of the picture tube of a certain black-and-white television set, an electron gun contains two charged metalic plates 3.05 cm apart. An electric force accelerates each electron in the beam from rest to 9.60% of the speed of light over this distance. (Ignore the effects of relativity in your calculations.) Determine the kinetic energy of the electron as it leaves the electron gun. Electrons carry this energy to a phosphorescent material on the inner surface of the television screen, making it glow. 2360 Your response differs from the correct answer by orders of magnitude. J For an electron passing between the plates in the electron gun, determine the magnitude of the constant electric force acting on the electron. N Determine the electron's acceleration as it passes between the plates. m/s2 Determine the time of flight as the electron passes between the plates. s