Question: A laser pointer used in the classroom emits light at 6550 , at a power of 4.00 mW. (One watt is the SI unit of

A laser pointer used in the classroom emits light at 6550 Å, at a power of 4.00 mW. (One watt is the SI unit of power, the measure of energy per unit of time. 1 W = 1 J/s). How many photons are emitted from the pointer in 115 seconds?

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