A punster in the utility industry has referred to the burning of coal in the Cool Water plant of Southern California Edison as "immaculate combustion." Explain how serious he could have been by reference to Table 12.4 and Figure 12.17
What will be an ideal response?
While it is clear that the Cool Water plant produced energy and pollution levels
that are much lower than would be allowed by the EPA, there is pollution released. See
Table 12.5 and Figure 12.17 to see just what those levels are, as suggested. With the
evidence to hand, the answer is a value judgment. Most likely, because some pollutants are
released, "immaculate combustion" will be seen as an overstatement.
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As the harmonic numbers get larger, the wavelengths get smaller and the frequencies:
a. do not change. b. sometimes get larger and sometimes get smaller. c. get larger. d. stay the same. e. get smaller.
A fast-moving missile soaring overhead possesses
A) speed. B) force. C) both of these D) neither of these
A current loop is placed in a magnetic field which is coming out of the board, as indicated. Will the loop tend to rotate clockwise, counterclockwise, or not at all about a vertical axis?
A. clockwise B. counter-clockwise C. not at all
Which of the following materials has the largest conductivity (at 20°C)?
A) copper B) platinum C) silver D) iron E) glass