Question

A 15,000-watt radio station transmits at 1700 kHz.

Determine the number of joules transmitted per second.

A). 15 J/s

B). 1700 Js

C). 1,700,000 J/s

D). 15,000 J/s

Answer 1

A watt is a joule per second, J/s.  So the answer is D, 15,000 J/s.  The frequency plays no part in this analysis. (you'd need that to know the energy of an individual photon, but not the total power of the wave)