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.
a
You might also like to view...
Kepler’s second law implies that as a planet’s distance from the sun increases in an elliptical orbit, its orbital speed
A. Increases. B. Decreases. C. Remains the same. D. Changes in a way we cannot determine.
Mathilda collects photoelectric data in her physics laboratory
She measures a stopping potential of 5.82 volts for radiation of wavelength 100. nm, and 17.99 volts stops 50.0 nm. (a) What is the work function for the material in eV? (b) From her data one determines Planck's constant to be what?
Two masses, M > m, travel down the surfaces shown. Both surfaces are frictionless. Which mass has the larger speed at the bottom?
If the part of an iceberg that extends above the water were suddenly removed, the
A) iceberg would sink. B) buoyant force on the iceberg would decrease. C) density of the iceberg would change. D) pressure on the bottom of the iceberg would increase. E) none of the above