1. The problem statement, all variables and given/known data The Earth intercepts 1.27 x 10^17 W of radiant energy from the Sun. Suppose the Earth, of volume 1.08 x 10^21 m3, was composed of water. How long would it take for the Earth at 0°C to reach 100°C, if none of the energy was radiated or reflected back out into space? 2. Relevant equations Q=mc*deltaT 3. The attempt at a solution I just want to make sure that I did this correctly because the answer choices are all similar and vary by degrees of magnitude and I would like to avoid a simple mistake. Multiply the volume by 1000 to get the weight in kilograms, then multiply by 100, the temperature change. Multiply this by the specific heat. So: 1.27 x 10^17 = 1.08 x 10^24 kg * 4186 * 100 divide both sides by Q, gives a value in seconds. Convert to years which is approximately 113 years. Is this correct?