All Questions
Tagged with earth estimation
82
questions
4
votes
3
answers
2k
views
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
130
views
Saturn V horizontally attached to Earth
If the Saturn V rocket were attached to the ground facing in the opposite direction of the Earth's spin, would it in anyway slow the Earth's spin on its axis? How significant of an impact would it ...
- 195
1
vote
2
answers
257
views
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 ...
39
votes
5
answers
29k
views
If the Earth is a good conductor of electricity, why don't people get electrocuted every time they touch the Earth?
Since the Earth is a good conductor of electricity, is it safe to assume that any charge that flows down to the Earth must be redistributed into the Earth in and along all directions?
Does this also ...
- 1,867
0
votes
1
answer
2k
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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
3
votes
1
answer
2k
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How much potential fusion energy is in Earth's ocean?
Assuming the most efficient manner for extraction, and a ready supply of other necessary materials not mentioned herein, and given the current estimates about the volume of Earth's ocean, how much ...
- 421
0
votes
1
answer
365
views
How much energy would it require to send Earth to Proxima Centauri?
Assuming 100% efficiency of energy usage, and given the current estimates about the mass of known objects in our solar system, including Earth itself, and assuming no other objects are affected by ...
- 421
10
votes
3
answers
226
views
How much additional light does Earth receive from the Sun due to Earth's gravitational field?
I was reading about how gravity affects light, and that got me wondering how much additional light is collected by the Sun due to the Earth's gravitational field.
Is it a significant amount of light (...
- 203
13
votes
1
answer
6k
views
How much power would be needed to make a substitute for natural Earth magnetic field?
Imagine the Earth's magnetic field will take a "maintenance pause" for 1000 years and there is a giant 10-year "doomsday countdown timer" ticking in the sky. The magnetic field will be just normal for ...
- 239
1
vote
2
answers
663
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7 Billion people jumping at once
What would happen if every person in the world gathered at a minimum possible area and jumped all at once? Would that have any effect on Earth?
- 2,983
21
votes
3
answers
11k
views
How quickly was the Earth rotating 250 million years ago?
The Earth is slowing at a rate of $4.7\times10^{-4}$ miles per second every 100 years due to tidal forces of the moon.
See:
http://en.wikipedia.org/wiki/Earth%27s_rotation
http://imagine.gsfc.nasa....
- 311
8
votes
4
answers
12k
views
Effect on length of day as the polar ice caps melt
If the polar ice caps of the Earth melt, how will the length of the day be affected?
- 247
8
votes
2
answers
9k
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How is the Earth heated by a Full Moon?
While the moon is certainly not a good reflector of solar radiation, surely the radiation it reflects back heats the Earth (even if it is a terribly small amount).
How would one go about calculating (...
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