A satellite in Earth orbit maintains a panel of solar cells of area 2.60 m2 perpendicular to the direction of the Sun's light rays. The intensity of the light at the panel is 1.39kW/m2.
(a) At what rate does solar energy arrive at the panel?
(b) At what rate are solar photons absorbed by the panel? Assume that the solar radiation is monochromatic, with a wavelength of 550nm, and that all the solar radiation striking the panel is absorbed.
(c) How long would it take for a "mole of photons" to be absorbed by the panel?