Suppose the average intensity of the solar radiation that strikes normally on a surface just outside Earth's atmosphere is 1.6 kW/m2. (It is actually 1.4 kW/m2.) (a) What would be the radiation pressure pr exerted on this surface, assuming complete absorption? (b) For comparison, find the ratio of pr to Earth's sea-level atmospheric pressure, which is 1.0 x 105 Pa.
