1) According to the U.S. Department of Energy, in 2005 the Unites States’ industrial, transportation, commercial, and residential sectors consumed 32.1, 28.0, 17.9, and 21.8 quads of energy, respectively. What are the equivalent amounts in EJ?
2) For 2000, the estimated total CO2 emissions for the Unites States, Japan, China, and India were 5970 MMT, 1190 MMT, 2986 MMT, and 1048 MMT, respectively. Create a list of the four countries, ranked in order of decreasing carbon intensity per unit of energy consumed. Give the units in either tonnes CO2 per terajoule TJ or tons per billion BTU consumed.
3) An interest buydown program offers to reduce interest rates by 4% from the base rate. Suppose the base rate for a loan of $8000 is 8% for 10 years. What is the monthly payment before and after the buydown? In this case, use monthly compounding, that is, the term is 120 payment periods, and the interest per month is 0.667% before and 0.333% after the buydown.