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Determine the fraction of the energy radiated by the sun in the visible region of the spectrum (350 nm to 700 nm). (Assume the
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What is the minumum potential that must be applied across an x-ray tube in order to observe each of the following? What is the
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An electron of kinetic energy 41 keV moves in a circular orbit perpendicular to a magnetic field of 0.330 T.
(a) Compute the
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