An electromagnetic wave has the wavelength of 42.6 ?m and intensity of 78.5 W/m^2.
How many photons are there in 1 cubic meter?
Number of photons =
Find the momentum of one photon.
Momentum of 1 photon = ____ kg·m/s
Find the total momentum of photons in 1 cubic meter.
Total momentum = ____ kg·m/s