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Surface temperature of earth

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127. Calculate the temperature (K) of the earth if there were no greenhouse effect. Assume the solar irradiance is 1500 W/m2 and the total planetary
albedo is 25 percent. (The Stefan Boltzmann constant is 0.567e-07 W/m2/K4). ****I've tried to answer this twice, but both times I was incorrect and the program gave the following hint (which was NO help whatsoever): Stefan Boltzmann law ****Please do this only if you're 100% sure you're right. The program is very picky! Thanks :)

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The solution demonstrates how to apply Stephan-Boltzman law to find the earth's surface temperature due to the sun's radiation.

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