All Questions
24
questions
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463
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How much time dilation are we experiencing here on Earth? [duplicate]
We experience time dilation from speed and gravity, but we are in more than just the Earth's gravity field, but also the sun's and the galaxy's gravity field and we are both spinning at 1,670 km/h, ...
-2
votes
1
answer
140
views
How high can you jump (at the corner) on Cube-Earth?
I have read this question:
Is the force of gravity always directed towards the center of mass?
And G. Smith's answer lists a site where they specifically talk about this case mathematically.
https:/...
- 29k
0
votes
1
answer
104
views
Black hole on Earth, 1 foot in diameter [duplicate]
If a black hole 12 inches in diameter were situated (say) 10 metres off the ground, what would happen?
And how long would it take to devour the earth?
user102490
2
votes
1
answer
102
views
How much does NASCAR affect the rotation of the Earth? [duplicate]
Many of us will be familiar with XKCD 162: Angular Momentum, in which someone spins counterclockwise to slow down the rotation of the earth and make the night longer.
The mass of an individual human ...
- 133
-3
votes
1
answer
77
views
Could enough people spin Earth backwards faster than they could run? [duplicate]
So, consider the theoretical situation in which the earth is no longer spinning, and we want to spin it up by running in the opposite direction (Yes, this question was inspired by the Nike commercial)....
- 101
4
votes
2
answers
296
views
How much mass must Earth lose to lose its Moon?
Maybe I am wrong about the basic concept here, but for my curiosity: how much mass would need to leave the Earth (like satellites and rockets) to create an imbalance between the Earth and Moon so that ...
- 215
2
votes
3
answers
3k
views
Can humans control rotation of the Earth?
I'm a class 12th student and this thought just struck me from nowhere.
Assume a situation where every human on this planet turns towards west. All of them start walking simultaneously in west ...
- 131
0
votes
1
answer
195
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If the Earth were a pool ball, could I feel mountains? [closed]
If the earth (12,742 km diameter) were scaled down to the size of a pool ball (61mm diameter), the mountain ranges would still exist, obviously. But would a typical human be able to feel those ...
- 1,057
1
vote
1
answer
347
views
How destructive would a small black hole be on the surface of the Earth?
Say a black hole with the diameter of around 200 meters or so was formed on the Earth's surface, how much damage would it cause?
- 13
3
votes
2
answers
2k
views
What exactly will happen if a small planet collides with Earth?
This is a video of a simulation of Ceres (a dwarf planet) hitting Earth at 2000km/s.
What strikes me the most, is how fast the shockwave is moving. It takes about 6 minutes for the shockwave to pass ...
- 1,270
4
votes
3
answers
2k
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Are we increasing the gravity of Earth with our population?
I have these questions related to my question title:
Do we, other species and things have our own gravity?
How much Gs a human have?
Are we effecting Earth, nearby moons and planets with our gravity?
- 291
0
votes
4
answers
250
views
Does not the mass of those living on the Earth add on to the mass of the Earth or is it too negligible to be cared for?
Source: Earth weighs about 13,170,000,000,000,000,000,000,000 pounds (or
5,974,000,000,000,000,000,000,000 kilograms). Since Earth is too big
to be placed on a scale, scientists use mathematics ...
- 669
3
votes
2
answers
299
views
Reaction due to gravity
There is a reaction to the gravity of the earth on us but the earth does not move due to its huge mass. But what if I combine the weight of all humans and other things on Earth? Is it not enough to ...
- 785
1
vote
2
answers
257
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Reduction of Earth's rotation due to increase in humidity
I came to know that, moon is moving away from earth, resulting reduction of Earth's rotation. Similarly, if Earth's humidity increases, water vapor will be move up to the air from water sources, will ...
0
votes
1
answer
2k
views
How much energy would it take to stop Earth's rotation on its axis?
I see a lot of questions regarding situations what would happen if the world would stop spinning. This got me to wondering how much energy it would actually take to stop the world from spinning.
- 1,348