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Thermodynamic Processes

This assignment is due before 9 AM, Monday, April 27, 2009.

Please type your last name and first initial (e.g., Gavrin, A):

Please type a nickname: (in case your answer gets used in class).

The following three questions refer to the material you were to read in preparation to the lesson. Questions 1-2 require you to write a three or four sentence response. Question 3 is multiple choice.

You may change your mind as often as you wish. When you are satisfied with your responses, click the SUBMIT WARMUP button at the bottom of this page.

WarmUp assignments are worth 5 points each.

1.

For an ideal gas, the change in internal energy is given by U = nC_VT for any process. Please explain how this can be true for processes that are not isochoric.

2.

A hand bicycle pump must compress air from atmospheric pressure to the pressure inside the tire (usually 5 or 6 atm). Please estimate the temperature of the air as it enters the tire.

3.

If a process is closed (system returns to its original state), which of the following are zero?

The work done by the system
The work done on the system
The heat added to the system
The change in energy of the system

none of the above

Below is a space for your thoughts, including general comments about today's assignment. What was hard or confusing (or cool)? What would you like to spend extra time on in class? Do you see how this subject fits in with the others we have discussed?

You may change your mind as often as you wish. When you are satisfied with your responses click the SUBMIT WARMUP button.

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