So, this is given question:
The radio station emits radiation power of 6 kW, wavelength 3 m.
a) What is the energy of one photon radiation?
b) How many photons are emitted in 5s?
Just to don't get confused, photons are the same as quinces (because I got confused there, teacher didn't told us that lol). Probably super-simple task, but I can't solve this.
I tried this:
But here I came across problems, I know that h is const., but don't know what is going to be with c and f...
*Sorry if I posted this in wrong category*