A window, 1.0m by 1.0m receives 27J of energy, from sunlight, in one minute. What is the Rms magnetic field of the light striking the window.
E = cB
I = (ErmsBrms) / μo
The Attempt at a Solution
Not sure if those equations are right when solving this problem and cant find a problem similiar to it....completely stuck. Do I use Poynting's vector?