An electron in a television picture tube has a classical kinetic energy of 78 keV, which is the kinetic energy that Newton would calculate using the measured speed and rest mass of the electron. What is the actual kinetic energy of the electron; that is, what is the value found using the relativistic result for the kinetic energy? (Give your answer in units of keV)
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An electron in a television picture tube has a classical kinetic energy of 78 keV, which...
Suppose that a proton is initially at rest. The proton’s kinetic energy is increased by accelerating it through a potential difference of 1.70×108 V. The mass of the proton is 938.3 MeV/c2. What is the proton’s Kinetic Energy (K)? Remember that K = Work Done = qV. Give your answer in eV. If an energy plant produces energy at a rate of 98 MW, determine how many protons must be converted to energy each second in order to do this....
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Q) The electron beam inside an old television picture tube is 0.40 mm in diameter and carries a current of 50 μA. This electron beam impinges on the inside of the picture tube screen. Part A How many electrons strike the screen each second? Ans: 3.1×1014 electrons Part B: What is the current density in the electron beam? Ans: J J = 400 Am2 Part C: The electrons move with a velocity of 3.6 ×107 m/s. What electric field strength...
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