Questions tagged [equilibrium]
Equilibrium is the condition of a system in which all competing influences are balanced. These can range from forces (static/dynamic equilibrium), to chemical processes (chemical equilibrium) and temperature gradients (thermal equilibrium).
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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 ...
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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 ...
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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 ...
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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 ...
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Water level in pipe higher than surrounding body of water
I had a question about water pressures and level. We've recently drilled a near vertical hole underground 130m deep by 400mm in Dia into flooded lower underground workings as part of a de-watering ...
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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 ...
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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 ...
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Why does Equilibrium shifts towards more dense phase while increasing pressure for phase change Equilibrium?
I recently read that when pressure of system in phase change equilibrium is increased, it shifts towards denser phase. So, in case of Melting of ice, increase in pressure results in shift towards ...
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Doubt regarding proof of Earnshaw's Theorem using Gauss's theorem
While proving Earnshaw's theorem using Gauss's theorem, we consider a small sphere surrounding our test charge, and apply Gauss law on this sphere, stating that field from all external charges must ...
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Why charges reside only on the surface on conductor?
I wonder why charges reside only on the surface on conductor?
And I read this question and the answer to it:
Why charges reside on the surface on conductor?
https://physics.stackexchange.com/a/210634/...
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Charge separation equilibrium equation for non-rotating blackhole at Eddington limit with spherically symmetric accretion?
What is the formula for equilibrium charge on a non-rotating black hole with spherically symmetric hydrogen-1 inflow at the Eddington limit of luminosity based on photon scattering acceleration of ...
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Classification of equilibrium configurations for particles subject to elastic force constrained on a circle
I am interested in classifying all the possible equilibrium configurations for an arrangement of $l$ equal point particles $P_1, P_2, . . . , P_l$ $(l > 2)$ on a circle of radius $R$ and centre $O$....
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Lami's Theorem Problem
Lami's Theorem states that the magnitude of each force in an equilibrium state consisting of three coplanar, concurrent forces acting at a point is directly proportional to the sine of the angle ...
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Equilibrium constellations of classical point charges in hollow conductors
As far as I know, in free space there can be constellations of $N$ point charges in electrostatic equilibrium (albeit unstable equilibrium) for all $N$ except $N=2$.
Some discussions here already ...
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The forces acting on the tensegrity structure
Are these the only forces acting on the body. I assumed the COM to be somewhere there in between. since the tension in main string doesnt perfectly coincide with COM theres a small torque being ...
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