All Questions
7
questions
8
votes
2
answers
589
views
Air pressure at ground level at the equator and the poles
At the equator at sea level you are about 17 miles higher up than at the poles ie 17 miles further from the center of the earth. Yet the air is not the same as it would be 17 miles up at a higher ...
0
votes
1
answer
98
views
How do we not feel the speed of rotation of Earth?
Many people say, we don't feel the speed because everything around us including the air moves with the same speed, but I am not satisfied with the explanation. If it was so, shouldn't we feel a huge ...
- 101
0
votes
2
answers
451
views
Earth's rotation and a helicopter [duplicate]
Imagine a helicopter that took off from point A on the ground and goes vertically in the air to a certain fixed point B in the atmospheric area at a certain fixed altitude with enough fuel to stay ...
48
votes
9
answers
21k
views
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....
- 609
0
votes
2
answers
1k
views
What would happen to Earth's atmosphere if the force of gravity became slightly weaker?
Many people, myself included, have wondered if the human race should be worried about the sun exploding at some point in our future (it seems to be well established that we shouldn't be worried.) On a ...
- 203
23
votes
5
answers
24k
views
Can helium disappear from Earth?
Helium is lighter than air, so it should fly off from Earth.
Is it possible that in the future we will run out helium?
- 863
8
votes
2
answers
587
views
Is it possible to use a balloon to float so high in the atmosphere that you can be gravitationally pulled towards a satellite?
A recent joke on the comedy panel show 8 out of 10 cats prompted this question. I'm pretty sure the answer's no, but hopefully someone can surprise me.
If you put a person in a balloon, such that ...
- 183