All Questions
Tagged with newtonian-gravity thermodynamics
43
questions
2
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5
answers
656
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The question of the second law of thermodynamics [duplicate]
I am asking question which definitely will be considered as duplicated but I want to ask it more explicitly to prevent empty speech.
Suppose we have "closed" system which is consists of ...
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0
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Is a planet hot inside because it is still hot from beginning, or continuously heated? [duplicate]
If a planet emerges from multiple colliding pieces, that causes its material heat up.
Later, an existing planet is continuously heated by radioactive decay, tidal forces and other effects.
But are ...
- 3,901
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vote
1
answer
231
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How does the Earth have enough gravity to hold on to its atmosphere? [duplicate]
I'm looking for numbers/math that describe how earth (or any other planet) holds on to it's atmosphere.
Presumably, we would be able to determine the exact atmospheric pressure that we would expect ...
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1
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3
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What will happen if we boil water in the absence of gravity?
We know that, Convection is the mode of heat transfer due to the motion of individual molecules of a fluid (liquid or gas). The motion of the constituent particles arises due to difference in ...
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56
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3
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How does the Earth's center produce heat?
In my understanding, the center of the Earth is hot because of the weight of the its own matter being crushed in on itself because of gravity. We can use water to collect this heat from the Earth and ...
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4
votes
1
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What would happen if we had a crystal structure but only gravitational interactions?
The idea is simple. Let's say we arrange similar bodies (call them planets, ions, anything) in an infinite crystal structure, but the only possible interactions are gravitational interactions.
A ...
- 165
2
votes
2
answers
545
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Energy of room. Ideal gas law
I have been following Blundel's "Concepts of thermal Physics" and I got to the derivation of the ideal gas law. And it all made sense, we made a couple of assumptions and approximations, but then I ...
- 637
2
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1
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If a galaxy forms from a spherical stationary cloud, how much of the gas will escape?
Let's ignore the dark matter legend and stay with Keplerian physics.
Assuming that there is a cloud with $N$ stationary particles with the same size uniformly distributed in a sphere and they ...
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vote
1
answer
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Champagne bubbles and gravity
One of the influences on bubble size is the speed with which a bubble rises in a glass - this, I believe, is due to the force of gravity which acts on the liquid around the CO2. The greater the ...
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2
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258
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Weight of a container of gas and container shape [duplicate]
Consider a cube shaped container with one mole of gas inside.
Acceleration due to gravity would give the difference in force between the top of the container and the bottom to be mg, with net force ...
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22
votes
2
answers
3k
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Can someone explain this Freeman Dyson quote about gravity and thermodynamics?
I was reading a book review by Freeman Dyson at http://www.nybooks.com/articles/2018/05/10/the-key-to-everything/ and he makes the following statement at the end of the 13th paragraph (3rd dropcap) ...
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Vertical surface would lose heat faster by convection than a horizontal surface?
Is the heat coeff affected by gravity?
Vertical surface would lose heat faster by convection than a horizontal surface?
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8
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3
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584
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Entropy and gravitational attraction
Any process which is spontaneous and irreversible must involve a (positive) change in entropy of the universe
This is one condition to the spontaneity of a process that the overall universe (System + ...
- 1,059
48
votes
9
answers
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Why is air not sucked off the Earth?
People said outside earth is a vacuum. But the air does not get sucked from the Earth's surface. Some said it is due to gravity and some said the speed of air molecules are not high enough to escape....
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1
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How come the Earth is not crumbling into the core due to fact that the core is in the middle of it? [duplicate]
I always wondered why isn't the Earth shrinking or melting because of the core.
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