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Search options not deleted user 181947

Covers the study of (primarily homogeneous) macroscopic systems from a heat/energy/entropy point of view. Consider also using the tag: [statistical-mechanics].

0 votes
0 answers
212 views

Work of van der Waals gas in a isotherm expressed with respect to the initial and final pres...

The work of a van der Waals gas during an isothermal transformation is readily found to be ($n=1$ mol) \begin{equation} W =RT \ln\frac{V_1-b}{V_2-b}+a\left(\frac{1}{V_1}-\frac{1}{V_2}\right)\qquad ( …
Dimitris's user avatar
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2 votes
2 answers
274 views

Is it work or heat?

One student of mine has found one question in a book of thermodynamics (1st year university level). Work or Heat? You grab a bottle of juice and shake it thoroughly. …
Dimitris's user avatar
  • 399
9 votes
6 answers
928 views

Explain the second principle of thermodynamics without the notion of entropy

I have prepared my notes regarding conservation laws and I want to add a couple of things about the second principle of the thermodynamics. …
Dimitris's user avatar
  • 399
9 votes
6 answers
9k views

How can we explain the linear relation between the temperature scales?

In the proof of the relation F=(9/5)C+32 (degrees celsius to fahrenheit) we assume that there is a straight-line (linear) relation between the two temperature scales: F=mC+b. Then we need two "points" …
Dimitris's user avatar
  • 399
2 votes
3 answers
2k views

Pressure: extensive or intensive property?

Nevertheless, I am puzzled about something I read from a book (Engineering Thermodynamics Michael Horsley, Chapman and Hall 1993). …
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