For Example 3.12, how much fuel would be saved if the efficiency of the power plant is increased from 36 to 40 percent?
What will be an ideal response?
amount of coal that could be saved is, therefore, 293,000 kg - 259,000 kg = 34,000 kg
(or 646,000 lbm - 570,000 lbm = 76,000 lbm)
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Which of the following describes the shape of smokestack plumes on days when thunderstorms are most likely to form?
A. lofting shape B. looping shape C. coning shape D. fanning shape
The very common carbonate mineral shown here that is a clear to light-gray color is
A) calcite.
B) dolomite.
C) hematite.
D) magnetite.
E) pyrite.
Based on temperature, the atmosphere is divided into
A) nitrogen, oxygen, argon. B) two functional areas that absorb radiation from the Sun. C) four regions: ranging from the troposphere to the thermosphere. D) two broad regions.
In the process of osmosis,
A. water diffuses from an area with a high concentration of water molecules to an area with a low concentration of water molecules. B. water moves from an area of lower solute concentration to an area of higher solute concentration. C. water moves from the outside of cells to the inside of cells. D. both A and B