1.Suppose in 100 years energy consumption is still 330 Ej/yr, but coal supplies only 20 percent of total demand, natural gas supplies 30 percent, and oil 10 percent. The remaining 40 percent of demand is met by noncarbon-emitting sources. What would be the carbon emission rate (Gt/yr)
2.A well of 0.4 m diameter fully penetrates a 25 m thick confined aquifer of coefficient of permeability of 12m/day. The well is located in the center of a circular island of radius 1 km. The water level at the boundary of the island is 80m. At what rate should the well be pumped so that the water level in the well remains 60 m above the bottom?