This test consists of 10 multiple choice questions and 5 short answer questions. The test is closed book, but you are allowed one 3x5 note card, and your calculator. Suppose you have a wind turbine that puts out 100 W when the wind velocity is 4 mph.
Sources often have low maximum efficiencies.
The energy stored by the moon is rather small. The energy is continuously available. The availability of energy is very predictable. The peak intensity is in the ultraviolet. The intensity of light from the sun is constant over the whole earth.