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A laser pointer with a power output of 5.00 mW emits red light (λ = 650 nm). (a) What is the magnitude of the momentum of each photon? (b) How many photons does the laser pointer emit each second?

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Question

A laser pointer with a power output of 5.00 mW emits red light (λ = 650 nm). (a) What is the magnitude of the momentum of each photon? (b) How many photons does the laser pointer emit each second?

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