Wavelength of Microwave????

Question

What would the wavelenght of a microwave operating at 2.5 GHz with a power output of 500 W be?

I know that the wavelenght is c/f, and f = 1GHz is 10^9 Hz, therfore, 2.5 x10^9, but what would c=???

Answer 1

c = speed of light = 2.9979 * 10^8 m/s (or very close to that number)

so you would get (2.99 *10^8 m /s ) / 2.5 X 10^9 cycles /s
seconds cancel so your left with 3 / 2.5*10 = 3/25 =.012 meters

calculations may be wrong (dont have paper or calculator)

Answer 2

The power output is irrelevant. Only the frequency of the microwave and the speed of light govern the answer.