College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 12

The oceans have a volume of 317 million cubic miles and contain 1.32 × 10 21 kg of water. Of all the hydrogen nuclei in this water, 0.015 6% are deuterium. (a) If all of these deuterium nuclei were fused to helium via the first reaction in Equation 30.4, determine the total amount of energy that could be released. (b) Present world electric power consumption is about 7.00 × 10 12 W. If consumption were 100 times greater, how many years would the energy supply calculated in (a) last