An adiabatic free expansion of a gas in a thermally isolated container is not reversible because
A. work must be done on the gas to return it to its original volume.
B. heat must be exchanged with the surroundings to return the gas to its original temperature.
C. its internal energy has a greater value after the expanded gas is returned to its original volume and temperature.
D. of all of the above.
E. of (a) and (b) above only.
Answer: A
You might also like to view...
________ waves cannot travel through the Earth's liquid outer core
Fill in the blank(s) with correct word
A 50 kg ice skater moving at 6 m/s collides with a second stationary skater with mass 70 kg. The skaters cling together after the collision and move without friction. Compute their speed after the collision
The ozone layer
a. reflects all EM waves b. reflects high frequency radio waves c. reflects low frequency radio waves d. is responsible for the greenhouse effect e. absorbs ultraviolet light in sunlight
Whenever the alternating current frequency in a series RLC circuit is halved,
a. the inductive reactance is doubled and the capacitive reactance is halved. b. the inductive reactance is doubled and the capacitive reactance is doubled. c. the inductive reactance is halved and the capacitive reactance is halved. d. the inductive reactance is halved and the capacitive reactance is doubled. e. the reactance of the circuit remains the same.