How Many Photons Does a 1-kW Radio Transmitter Emit at 880 kHz?

[GravityGirl]

a 1-kW raido transmitter operates at 880kHz. How many photons per second does it emit?

Power=work/time
Power=change in KE/time

f=1/T
T=1/880kHz

so 1 kw=change in KE/1.136x10^-6

change in KE=.00136 J

i don't know if i am doing this right. please point me in the right direction.

 

[Kurdt]

You know the frequency (880kHz) of the photons and thus you can work out their energy with an equation you haven't written down. Then you know how much energy it uses per second (1 kW) and you can find the amount of photons per second from that?