All Questions
3
questions
9
votes
7
answers
14k
views
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
vote
1
answer
135
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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 ...
- 11
0
votes
3
answers
2k
views
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 ...
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