Question

[12.2] Direct light from the Sun delivers a time-averaged power of about 1300 W to every square meter on Earth. If we assume that all this light is delivered at a single wavelength λ-500 nm find expressions for the electric and magnetic field using the forms E(x, t) = Eo sin(kx-wt), B (x, t) = Bo sin(kx-wt). Give numerical values for Eo, Bo, k, and w.

Answer 1

Average Intensity is given by expression I_avg=Power/Area

I_{avg=1300/1 = 1300 W/m²}