When warm air moves into a cold air mass, the less-dense warmer air rides up over the colder, denser air. This is very similar to
A) orographic lifting.
B) adiabatic lifting.
C) temperature inversion.
D) what happens during a tornado.
Answer: C
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A series circuit has a 50-Hz ac source, a 40-? resistor, a 0.70-H inductor, and a 60-?F capacitor, as shown in the figure. The rms current in the circuit is 1.6 A. What is the voltage amplitude of the source?
A. 390 V B. 330 V C. 270 V D. 220 V E. 190 V
Light from two closely-spaced stars cannot produce a steady interference pattern due to
A) incoherence. B) the inherent instability of the atmosphere. C) their different radial distances. D) their non-point like natures. E) closely spaced stars not producing interference patterns.
At what rate is thermal energy generated in the 5-? resistor when ? = 24 V?
A. 13 W B. 3.2 W C. 23 W D. 39 W E. 51 W
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Answer the following statement true (T) or false (F)