Thermodynamic Properties of a Gas

Thread starter chhitiz
Start date Apr 16, 2010

AI Thread Summary

The properties that depend only on the initial and final states of a gas, regardless of the process, are known as state functions. The discussion shifts to the variation of the heat capacity at constant volume (Cv) when both pressure (P) and volume (V) are changing. It is clarified that Cv is defined under constant volume conditions, making it inapplicable when V is not constant. The conversation highlights the importance of understanding thermodynamic principles in relation to state functions and heat capacities. Overall, the focus remains on the definitions and equations relevant to thermodynamic properties.

Apr 16, 2010

chhitiz

this might seem trivial but i have no thermo books on hand and i can't remember what we call those properties whose value depends only on initial and final states of gas but not on the process adopted to reach final state?

Physics news on Phys.org

Apr 16, 2010

chhitiz

don't bother. found it could anybody tell me instead the equation of how C_v varies if both P and V are changing?

May 8, 2010

Acut

By definition Cv only exists when V is a constant.

Thread 'Off resonance driving of a MW/RF cavity'

Hello! Let's say I have a cavity resonant at 10 GHz with a Q factor of 1000. Given the Lorentzian shape of the cavity, I can also drive the cavity at, say 100 MHz. Of course the response will be very very weak, but non-zero given that the Loretzian shape never really reaches zero. I am trying to understand how are the magnetic and electric field distributions of the field at 100 MHz relative to the ones at 10 GHz? In particular, if inside the cavity I have some structure, such as 2 plates...

View full post »