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Physics 416: WarmUp Exercises

...Exact Differentials

This assignment is due before 10 AM, Monday, January 31st, 2000.

Please type LAST name:

Please type your LAST NAME and LAST FOUR SS# digits (eg: Smith3256):

I received no help from anyone on this assignment.

The following questions refer to the material you were to read in preparation to the lesson. Each question requires you to write a paragraph or two in response.

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.




1.


The "First Law of Thermodynamics" is stated in equation 2.8.3 in Reif. In it, there are two more types of "small" quantities. "d" with a bar (as in ) and "d" without a bar (as in ). Please explain the difference between these types.



2.

A brief return to 251: Consider the air in the our classroom (assume the room is sealed so no air can escape). Estimate the work done if the volume of the room were reduced by 1 cubic meter. Also, estimate the change in the total energy of the air during this process. You may need to recall the ideal gas law, PV=nRT.





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 button.

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