Assume that the effective temperature of the sun is 5780k; the radius of the sun is r= 6.96 x 100 cm; and the radius of the earth is 6360 km. (a) (3 points) calculate the bolometric solar flux at 1 au from the sun. (b) (3 points) the average albedo of the earth is about 0.3, meaning that it reflects bạck into space 30% of the radiation hitting it. work out the total amount of solar rakliation absorbed by the earth every second. (c) (3 points) assuming that the the earth behaves as a blackbody, find the equilib- rium temperature to at which it will radiate energy at the same rate it absorbs it. (d) (1 point) what environmental effect is responsible for raising earth's average tem- perature (~288 k) above the te value you have calculated?