All Questions
5
questions
1
vote
0
answers
30
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Can a thin pole break or be cog-sensitive under the influence of gravity?
When we consider such a phenomenon, what I am wondering is that the body of an object having a thin radius seems to cause the center post to be broken or the cog to be very sensitive, but why should I ...
- 49
4
votes
4
answers
191
views
What is the microsopic reason why hot air rise? [duplicate]
The common explanation for why hot air rises is a macroscopic one. That is that the hot air is higher pressure, lower density, and therefore gravity affects it differently than the surrounding cold ...
- 684
3
votes
1
answer
122
views
What is weight at the particle level? How EXACTLY do atoms exert weight on each other?
This is what my intuition says about how the concept of weight works in a solid.
The light brown arrows are the vectors of gravitational force, the light gray parts are the electron clouds around ...
- 71
0
votes
3
answers
608
views
How to calculate pressure/force on a triangle vertex? [closed]
Assuming those are identical triangles. We add some weights on the upper bar. The only difference is with the location of the weights and the size of the weights. Is there any difference on the ...
- 109
1
vote
2
answers
931
views
Why doesn't the vacuum of space rip the Earth, or other celestial bodies, like the Sun, apart?
Since vacuums are a lower pressure than the atmosphere of the earth(and probably many or all other planets) then why doesn't the vacuum of space rip the earth apart or suck all the gasses on it away ...
