Which of the following can be classified as "heat engines":
A) geothermal power plant
B) wind turbines
C) hydroelectric power plant
D) All of the above.
E) None of the above.
A
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There are a total of 88 constellations. Roughly how many of these can be seen at any given time from a single location on a clear night?
A) 66 B) 22 C) 11 D) 44 E) 80-85
Towering cumulonimbus clouds are a common feature in regions where moist unstable air is heated from below. Such clouds are produced by
A) convectional lifting. B) orographic lifting. C) frontal lifting. D) none of these
The period of the second hand on a clock is
A) 1 second. B) 1/60 second. C) 60 seconds. D) 3600 seconds. E) 12 hours.
Three resistors take the shape of a triangle, one resistor in each leg. Resistance in one leg is 4 ohms, 6 ohms in a second leg, and a third leg 10 ohms. Connecting an ohm-meter across the 10-ohm resistor will show the equivalent resistance to be
A) 1.4 ohms. B) 5 ohms. C) 6.7 ohms. D) greater than 6.7 ohms.