An argon-ion laser produces a cylindrical beam of light
An argon-ion laser produces a cylindrical beam of light whose average power is 0.662 W. How much energy is contained in a 1.88-m length of the beam?
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An argon-ion laser produces a cylindrical beam of light whose average power is 0.662 W. How much energy is contained in a 1.88-m length of the beam
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