Physics Help Forum Pressure and Volume work

 Thermodynamics and Fluid Mechanics Thermodynamics and Fluid Mechanics Physics Help Forum

 Jan 25th 2019, 12:53 PM #1 Junior Member   Join Date: Jan 2019 Posts: 2 Pressure and Volume work Hi everyone! This is my first post, so if you have tips on formatting please let me know. I am currently in a graduate level dynamics class and right now we are studying the first law of thermodynamics. The question that is giving me trouble is as follows: One day the atmosphere to compresses one mole of Neon gas from a volume of 30 L to a volume of 4 L. Further, the temperature is maintained at 280 K. So how much work does the atmosphere do? SO - my first attempt: I calculated the Pressure of the air parcel by using the ideal gas law of PV = nRT. And then I think we can use pressure and change in volume to calculate work, but I am maybe missing the conceptual idea behind it. The equation that I know is the integral of W from i to f = pdV - I don't get the integral part. do we have to integrate the values of pressure and the change in volume? This is what is tripping me up. Any tips are appreciated!! Last edited by prdk21; Jan 25th 2019 at 12:58 PM.

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