(a)The annual energy use by all of humanity is about 400 QUADS – where 1 “quad” is 1 quadrillion (1 x 10^15) BTUs. There are at least 6 billion people living on earth now. If we take those two numbers above to be exact, what is the AVERAGE POWER use per person on the planet (expressed in kW)?
(b) The U.S. accounts for just about one-quarter of all of the energy used by people on earth, and has some 300 million people. What’s the average power usage of the average American?