3.2 Work, Heat, and Internal Energy
Work as the area under a path on a pressure-volume diagram, its dependence on route rather than endpoints, and internal energy as a state function.
University Physics Volume 2, 3.2 Work, Heat, and Internal Energy
8 exercises
3.2 Exercise 1
How much work is done by the gas, as given in the figure, when it expands quasi-statically along the path ADC?
3.2 Exercise 3
When a liquid is vaporized, its change in internal energy is not equal to the heat added. Why?
3.2 Exercise 5
Is it possible for the temperature of a system to remain constant when heat flows into or out of it? If so, give examples.
3.2 Exercise 7
It takes 500 J of work to compress quasi-statically 0.50 mol of an ideal gas to one-fifth its original volume. Calculate the temperature of the gas, assuming it remains constant during the compression.
3.2 Exercise 9
In a quasi-static isobaric expansion, 500 J of work are done by the gas. If the gas pressure is 0.80 atm, what is the fractional increase in the volume of the gas, assuming it was originally at 20.0 L?
3.2 Exercise 11
An ideal gas expands quasi-statically and isothermally from a state with pressure p and volume V to a state with volume 4V. Show that the work done by the gas in the expansion is pV(ln 4).
3.2 Exercise 17
What is the internal energy of 6.00 mol of an ideal monatomic gas at ?
3.2 Exercise 19
Two monatomic ideal gases A and B are at the same temperature. If 1.0 g of gas A has the same internal energy as 0.10 g of gas B, what are (a) the ratio of the number of moles of each gas and (b) the ratio of the atomic masses of the two gases?
Adapted from University Physics Volume 2 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 2. Imported at revision db44eb9.