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Suppose that the average surface temperature of Earth is 300K. Assume this is uniform over its...

  1. Suppose that the average surface temperature of Earth is 300K. Assume this is uniform over its entire surface and determine the total energy radiated by Earth in one year in the form of blackbody radiation. (Earth’s radius is 6370 km).

    According to Wikipedia, the total energy consumption by humans in all forms (hydroelectric, burning of fossil fuels, etc.), is about 5.7x10 20 Joules in one year. How does your answer to the first part of the question compare with this?

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