Questions tagged [earth]
Earth is the planet on which we live, the 3rd planet from the Sun. Questions using this tag should be about Earth the planet and not Earth-like planets nor earth, as in dirt or soil.
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Escape velocity from Earth
We know the escape velocity from the Earth is 11.2km/s. Isn't it the velocity required to escape from earth if we go normal to the surface of earth? i.e while we derive the formula for the escape ...
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Why is a new moon not the same as a solar eclipse?
Forgive the elementary nature of this question:
Because a new moon occurs when the moon is positioned between the earth and sun, doesn't this also mean that somewhere on the Earth, a solar eclipse (...
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How long until we fall into the Sun?
As a planet moves through the solar system, a bow shock is formed as the solar wind is decelerated by the magnetic field of the planet. Presumably the creation of this shock wave would cause drag on ...
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Backyard experiments to falsify the Flat Earth theory [duplicate]
I recently became aware that the flat Earth theory still exists in the 21st century, and has colored the views of a friend of mine. Roughly speaking, the tenets are:
The Earth is a flat disk, with ...
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Why the electric potential of Earth is zero?
For a localized charge distribution the potential is set to zero far away from the charge distribution (at infinity)
Now, when grounding a conductor, i.e. connecting it to Earth, it is said that we ...
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Are there necessarily always at least two points where the Earth's magnetic field is vertical?
Seeing this statement in this answer
There are at least two spots on Earth where the magnetic field of the planet is not horizontal, but is vertical.
has got me thinking. I don't mean to quote it ...
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Is the Moon in a "Freefall" Around the Earth? [duplicate]
The force of gravity keeps our Moon in orbit around Earth. Is it correct to say that the Moon is in “free fall” around Earth? Why or why not?
I think the answer is yes. The moon is falling towards ...
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How does heat actually stay kept in the carbon molecules in the atmosphere? [duplicate]
We have all learned that the earth is getting heat up because of the CO2 and CO molecules absorbing heat. However, how is heat actually kept in those molecules. When photons heat them up, their ...
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How much effort would be required to fix the Earth's rotation?
Given that the earth's rotation has been slowing down by very slight amounts over time, forcing us to introduce leap seconds and so forth into our clocks and calendars, I would like to ask if this ...
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Gravitational force of the Earth [duplicate]
Why does gravitational force of the Earth decrease as we move towards the centre of the Earth? Where as inverse square rule says that distance is less than gravitational force is more.
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How would gravity change on a planet rotating around itself very fast?
Let's take a planet identical to Earth, but with rotation speed multiplied by ten thousand. What would happen with the gravity if it was spinning madly around itself? Would the centrifugal force make ...
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Deviation from Earth's orbit
How much orbital deviation is required for the Earth to get knocked out from current orbit so it either moves away from Sun or towards the Sun?
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Cancel out Earth's Magnetic field
Is there any tools except helmholtz coil to cancel out earth's magnetic field to calibrate magnetometers in practice.
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If the earth would stop spinning, what would happen?
What would happen if the earth would stop spinning? How much heavier would we be? I mean absolutely stop spinning. How much does the centrifugal force affect us?
If you give technical answers (please ...
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Can a Storm make the day longer/shorter?
I've read that changes in jet streams can affect the speed that the Earth rotates on its axis, thus making the day longer or shorter?
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