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A light source emits a beam of photons, each of which has a momentum of 2.9 x 10-29 kg.m/s. (a) What is the frequency of

A light source emits a beam of photons, each of which has a momentum of 2.9 x 10-29 kg.m/s. (a) What is the frequency of the photons? (b) To what region of the electromagnetic spectrum do the photons belong

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