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Answer to Question #2858 in Atomic and Nuclear Physics for brek

Question #2858
An 11,000-watt radio station transmits at 880 kHz. Calculate the number of photons that are emitted per second.
Expert's answer
P = 11000 W
ν = 880 Hz
t = 1s

Energy of one photon is
E = hν
For n photons that would be
En= nhν
Also
P = E/t = nhν/t

Thus
n = Pt/hν = (11000 [W] ×1 [s])/(6.62×10-34 [J×s]× 880 [s(-1)])=1.88×1034 photons

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