Problem
1. Identify a strength and a weakness of each of the following fuels:
(a) Coal
(b) Hydrogen
(c) Natural Gas
(d) Solar Fuel
2. If all of the energy from the sun were captured by solar cells with efficiency levels in the middle of the range of solar cell efficiency, how much energy could be converted to useful work each year?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.