What are the advantages of making generating facilities modular? Explain
What will be an ideal response?
Facilities that are built one-up from scratch in the field are much more expensive
to construct as discussed in Ch. 13 . It is easier to get replacement parts for modular
facilities. Additionally, factory-built plants that are discovered to have a problem will involve
an identical solution to each of the problems, fixing all at once.
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An ice skater performs a pirouette (a fast spin) by pulling in his outstretched arms close to his body. What happens to his rotational kinetic energy about the axis of rotation?
A) It changes, but it is impossible to tell which way. B) It increases. C) It does not change. D) It decreases.
A certain battery charger uses 12 W of power. At 6.0 cents per kilowatt-hour, how much does it cost to charge batteries for a full day?
A) 28¢ B) 1.4¢ C) 75¢ D) 1.7¢ E) 2.3¢
What did the Huygens probe photograph as it landed on Titan?
A) a pockmarked surface covered with volcanos B) a water world of frozen ice sheets C) dry, featureless plains D) nothing; there was zero visibility due to the methane smog E) hills, valleys and rivers
Which of the following frequencies could NOT be present as a standing wave in a 2m long organ pipe open at both ends? The fundamental frequency is 85 Hz
a. 85 Hz. b. 170 Hz. c. 255 Hz. d. 340 Hz. e. 382 Hz.