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Physics

Questions tagged [thermodynamics]

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

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This thought experiment was made with the purpose of trying to understand whether the ideal gas law holds in relativistic frames.Suppose you have two observers, a box that is perfectly insulative and ...
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In statistical mechanics (in particular I'm interested in applying the Landau Kinetic Equation to a hard spheres gas), it is often useful to get the gradient or the Fourier transform of the ...
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Here is what I observed:Background:I kept this bottle in my room, at a place where:half of it was in complete darkness (well, minimal light did fall on it, but very minimal).the other half ...
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So, when the gas (initially at the heater temperature T1) is compressed isothermally, it does not come into contact with the cooler, and in order to prevent the gas temperature from exceeding the ...
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I don't understand why the reverse Carnot Cycle works. Let's consider the isothermal expansion of a gas (body). The gas does work, but its temperature remains constant. For this to happen, the gas ...
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I am currently reflecting a bit on the formal structure of the theory presented in Callen's classic text Thermodynamics and an Introduction to Thermostatistics. I was originally going to post a more ...
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A student attempts to study a temperature of absolute zero by using a constant volume gas thermometer. According to his experience the pressure of triple point of water was 4.0010⁴ N/M² and the normal ...
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1.With neat sketch, explain the Joules’ experiment2.What are the drawbacks of first law of thermodynamics
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Water's temperature is given by (average K.E. of molecules) $=3/2 \ k_{B}T$, so my intuition is that flowing water molecules will gain additional kinetic energy from flowing, leading to a huge ...
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As someone with a small background in physics, I find myself questioning the necessity of the ideal gas constant $R$ in the Ideal Gas Law $pV = nRT.$ Why can’t we simplify this relationship to $pV =nT$...
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Título:Sobre el efecto Mpemba: interpretación y dudas físicasCuerpo del post:Hola, mi nombre es ArAgON.Estuve viendo sobre la teoría Mpemba, donde bajo ciertas condiciones el agua caliente se ...
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We all know from every day experience that if you touch metal that's been left outside in direct sunlight, it'll burn you. Why is that?I've read that it's related to the specific heat capacity and/or ...
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Consider a bound two-body system ($M>>m$) such as Earth–Moon. I'm trying to understand whether there's a meaningful asymmetry in how identical dissipation processes affect gravitational entropy ...
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I have a question regarding the second edition of Callen's Thermodynamics and an Introduction to Thermostatistics, which regards his third postulate:Postulate III. [...] The entropy is continuous ...
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I am looking for good notes on the Maxwell-Juttner distribution and its derivation. I stumbled across this post Calculation of Maxwell-Juttner distribution integral but I was unable to find reference ...

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