In one cycle of any heat engine
A. more heat flows from the engine than enters the engine.
B. the internal energy of the engine does not change.
C. the net heat flow is zero.
D. the net work done is larger than the heat exhausted.
Answer: B
You might also like to view...
An air-filled capacitor stores a potential energy of due to its charge. It is accidentally filled with water in such a way as not to discharge its plates. How much energy does it continue to store after it is filled?
(The dielectric constant for water is 78 and for air it is 1.0006.) A) 0.077 mJ B) 468 mJ C) 0.040 mJ D) 6.00 mJ
A distant palm tree on a hot dry day that often appears to be reflected from water is
A) due to light refracted upward as it grazes the hot surface. B) the inverse of a mirage. C) evidence that light travels in straight lines.
The Kepler mission discovered thousands of stars by using
A) the transit method. B) the Doppler method. C) the astrometric method. D) direct detection. E) gravitational lensing.
How long does it take for a radio signal to travel to a spacecraft 
m away?
A. 5.0 s
B. 50 s
C. 
D. 
E. 