All Questions
Tagged with equilibrium thermodynamics
342
questions
2
votes
1
answer
49
views
Two interacting blackbodies (one inside another) - when will thermal equilibrium be attained? [closed]
As I understand it, an ideal blackbody absorbs (and subsequently starts emitting) all incoming radiation. In typical setups like determining a planet's temperature given its albedo and distance from a ...
- 35
0
votes
1
answer
56
views
Thermodynamic work and potential functions
I was reading about the maximum thermodynamic work of a system (Z) that is going to equilibrium.
\begin{equation}
dZ = dU + p_0 + T_0dS
\end{equation}
I then came across the thermodynamic potential ...
- 31
2
votes
2
answers
90
views
What is the difference between a reversible process and an equilibrium? [closed]
I am confused about the differences between a reversible process and an equilibrium when considering their energy aspect.
Here is what I know so far.
(1) Equilibrium and Reversibility
Equilibrium ...
- 31
1
vote
2
answers
67
views
How do differently colored objects reach the same temperature if they are completely isolated together?
Imagine a perfectly reflective container, filled with vacuum and two bodies with different colors, i.e. they have different emissive and absorptive properties. The bodies don't touch each other or the ...
- 13
0
votes
0
answers
24
views
Pressure difference between a box and the outside atmosphere
Say I have a box of volume $V$, with an ideal gas inside it with temperature $T_b$. I don't know the number of particles inside it. The box is surrounded by the room's environment, which has ...
- 143
0
votes
0
answers
88
views
Apparent inconsistency with Maxwell-Boltzmann energy distribution
The Maxwell-Boltzmann distribution for the kinetic energies of particles is given as ( https://en.wikipedia.org/wiki/Maxwell%E2%80%93Boltzmann_distribution#Distribution_for_the_energy )
$$f(E) = 2 \...
- 2,712
4
votes
4
answers
908
views
Is the spontaneous flow of heat to thermal equilibrium an explicit law or is it implicitly assumed in thermodynamics?
This sounds like a really daft question, but I am trying to clarify details on foundations on thermodynamics to myself, which will involve asking really (seemingly) basic things.
When you have two ...
- 8,640
3
votes
3
answers
138
views
Why equation 5.29 in Schroeder's Thermal Physics is not equal to 0?
In Schroeder's "An Introduction to Thermal Physics" in section 5.2 (page 161), Schroeder considers the case of a system that is in thermal contact with a reservoir that is at a constant ...
- 57.2k
0
votes
0
answers
32
views
Given state $P$, does the set of all forward adiabatic processes and reversed adiabatic processes reach all states in the state space?
Let $A$ be a thermodynamic system and let $\Sigma$ be its state space. By the state postulate, if $A$ has $n$ two-way work channels (i.e. ways in which work can be done both positively and negatively ...
- 8,640
0
votes
0
answers
42
views
Understanding the relationship between $\Delta G$ and $K_p$, $K_x$ and $K_c$
Upon reading the chapter about equilibrium from my physical chemistry book, I was convinced that
$$ΔG= -RT \text{ln}(K_p) \tag{1}$$
and that
$$K_p = K_x (P^{\sum v}) \tag{2}$$
where $K_p$ is the ...
- 13
0
votes
0
answers
40
views
What regulates the size of our atmosphere?
Our atmosphere is only about 100km thick before the official start of space. That is a mere 1.57307% of the radius of Earth (6,357km). The difference between the gratitational force at sea level and ...
- 393
0
votes
3
answers
89
views
Does a single ball undergoing ideal simple harmonic motion count as being in thermodynamic equilibrium?
(Posting this and deleting a previous similar post to make the question more clear.)
Suppose we have an isolated system inside a box consisting of a spring and a ball attached to the spring. The ball ...
- 8,640
0
votes
1
answer
36
views
How do particle acquire thermal distribution?
Consider some toy N-body simulation: we start with a bunch of particles, discretize time, and simulate their interactions at each timestep. What numerical features should the simulation include to ...
- 8,901
0
votes
1
answer
80
views
Regarding the relation between statistical equilibrium and thermal equilibrium
I've seen a similar set of questions on the topic in SE but none seem to satisfy me.So,the question is as follows:1)What is the relation between thermodynamic equilibrium and statistical equilibrium ...
- 109
0
votes
1
answer
68
views
Can a body be in thermal equilibrium at a different temperature from surroundings?
As per my knowledge bodies attain constant temperature (thermal equilibrium with surroundings) when they absorb and emit energy at equal rates.
Let us say temperature of surroundings is T1.
We have a ...
- 1