The photons in a laser tend to be “self-reinforcing”: if some of the photons are in one state, the other photons tend to be as well. This explains the relatively narrow range of wavelengths in laser light. Can this same idea also explain why laser light is highly polarized? If so, how
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A fence post of mass m = 6 kg supports a fence with three lengths of barbed wire. The bottom wire is a distance d = 0.35 m from the ground, and each wire is spaced 0.35 m above the previous one. Each wire exerts the same horizontal tension T on the post.
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A particle of mass m and zero initial speed is dropped from a height h above a horizontal table. The particle bounces vertically on the table. The coefficient of restitution for the impacts is e < 1. All motion is vertical, and each impact is considered instantaneous.
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What determines the terminal velocity of a body in free fall?
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A bungee jumper of mass m attaches one end of a light elastic string to their foot, and the other end to the railing of a bridge on which they stand. The string has natural length l0 and modulus of elasticity λ.
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A laser used to weld detached retinas emits light. Explain how this process works and how the laser achieves the task medically and physically.
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You have been hired to design a family-friendly see-saw. Your design will feature a uniform board of mass M = 9.31 kg and length L = 14.02 m that can be moved so that the pivot is a distance d from the center of the board.
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What does it mean when we say that “an electromagnetic wave traveling through space has an oscillating magnetic field”?
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What key principle of quantum mechanics does the double-slit experiment demonstrate?
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If the absolute temperature of a gas is doubled, what happens to the root-mean-square (rms) speed of the molecules?
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