All Questions
5
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6
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Why is pressure in the outermost layer of a star lower than at its center?
I have done the math and I have obtained the hydrostatic pressure in a star is lower at the outermost layer of a star than in its center, where the pressure is actually maximum. Although the equations ...
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9
votes
7
answers
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What is gravity's relationship with atmospheric pressure?
I'm asking for clarification here. If Earth had the same atmospheric mass per square unit of ground but the Earth had suddenly gained mass so it had twice the gravity at the surface, would the Earth ...
- 227
-1
votes
2
answers
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 ...
- 23
0
votes
3
answers
2k
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What is precisely the reason that a helium balloon ascends?
A simple question with no clear answer for me: Helium is lighter than air and lighter air rises. That's it!?
I) A helium atom is approx. 4 times as light as an an air molecule. With 4 times less mass ...
- 3,348
6
votes
3
answers
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What keeps a gas giant from falling in on itself?
There is not enough gravity at the center to start nuclear fusion, but it seems that there would be plenty enough to collapse the planet.
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