Posted by **frank fred** on Monday, April 16, 2012 at 4:49pm.

the energy received by the earth from the sun is 1400w/m2. Assuming that the sun is a black body radiator and the ratio of the radius of the earth's orbit to the sun's radius is 216. Calculate the surface temperature of the sun. Stefan constant = 0.000000057w/m2 k4.

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