User P'bD_KU7B2 - Physics Stack Exchange

3 votes

2 answers

1k views

Very briefly, what is the relation/difference between classical field theory and classical thermodynamics/statistical mechanics?

asked Feb 25, 2022 at 14:34

3 votes

1 answer

148 views

What does Thornton and Marion mean by "validity of Lagrange's equations"?

asked Mar 8, 2022 at 16:03

1 vote

1 answer

69 views

Calculating the divergence of static electric field without making the dependency argument?

asked Feb 1, 2022 at 9:08

1 vote

3 answers

448 views

In reversible process, why define $\delta W=-PdV$ instead of $\delta W=-VdP$?

asked Feb 5, 2022 at 15:17

1 vote

2 answers

115 views

How to go from $H=TS+\mu N$ to $dH=TdS+VdP$?

asked Mar 26, 2022 at 23:42

1 vote

1 answer

36 views

Why can one defines the total differential expression of thermal potentials during non-quasi-static process?

asked Mar 28, 2022 at 10:57

1 vote

1 answer

78 views

Microscopically (Classically), How does Current keep Increasing with Decreasing Electrostatic Field inside of Capacitor in a $R(L)C$ circuit?

asked Oct 4, 2022 at 13:35

1 vote

1 answer

63 views

Is there alway exist a Lagrangian in the form of $L=T-C(\{q_i\},\{\dot q_i\},t)$, where $C$ contains no algebraical rewrite of $T$? [closed]

asked Oct 7, 2022 at 17:35

0 votes

2 answers

55 views

What does the "work done" $\frac{dW}{dt}$ in Poynting's theorem mean? Real life examples?

asked Oct 10, 2022 at 18:08

0 votes

1 answer

180 views

Pressure becomes zero for ideal gas?

asked Mar 31, 2022 at 6:48

0 votes

1 answer

133 views

Why is $TΔS$ a good approximation for calculating heat transfer during heating/cooling in real life?

asked Mar 26, 2022 at 16:43

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11 Questions

Very briefly, what is the relation/difference between classical field theory and classical thermodynamics/statistical mechanics?

What does Thornton and Marion mean by "validity of Lagrange's equations"?

Calculating the divergence of static electric field without making the dependency argument?

In reversible process, why define $\delta W=-PdV$ instead of $\delta W=-VdP$?

How to go from $H=TS+\mu N$ to $dH=TdS+VdP$?

Why can one defines the total differential expression of thermal potentials during non-quasi-static process?

Microscopically (Classically), How does Current keep Increasing with Decreasing Electrostatic Field inside of Capacitor in a $R(L)C$ circuit?

Is there alway exist a Lagrangian in the form of $L=T-C(\{q_i\},\{\dot q_i\},t)$, where $C$ contains no algebraical rewrite of $T$? [closed]

What does the "work done" $\frac{dW}{dt}$ in Poynting's theorem mean? Real life examples?

Pressure becomes zero for ideal gas?

Why is $TΔS$ a good approximation for calculating heat transfer during heating/cooling in real life?