Assume Earth is a spherical blackbody of radius 6,371 km. It absorbs heat from the Sun at a rate given by the solar constant equal to 1379 W/m2. Furthermore, assume Earth has an equilibrium temperature of 278.9 K and is immersed in space, which has a temperature of 50 K. Assume the Earth radiates heat back into space equally in all directions. At what rate will the entropy of Earth increase according to this model? 5.91 * 1014 W/K 6.30 x 1014 W/K 0 W/K 3.69 1012 W/K