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(a) If the power output of a 670 kHz radio station is 49.0 kW, how many photons per second are produced?
photons/s
(b) If the radio waves are broadcast uniformly in all directions, find the number of photons per second per square meter at a
distance of 125 km. Assume no reflection from the ground or absorption by the air.
photons/(s · m²)
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