The Earth intercepts 1.27 × 1017 W of radiant power from the Sun. Suppose the Earth, of volume 1.08 × 1021 m3, was composed of liquid water. How long would it take for the liquid water Earth at 0 ◦C to reach liquid water at 23.8 ◦C, if none of the power was radiated or reflected back out into space? Hint: There are 3.154 × 107 s in one year. The density of water is 10 × 103 kg/m3 and the specific heat of water is 4186 J/(kg K). a)113 years b)2.69 × 104 years c)1.13 × 105 years d)2.69 × 107 years e)26.9 years

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