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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Distribution of Earth's mass and its role in the nodal precession of satellites?
From what I have read and understood so far, the nodal precession of a satellite in low Earth orbit is caused by the bulge equatorial of the Earth (caused by its rotation on itself) which moves the ...
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Getting 600 n/kg when calculating the gravity for Earth [closed]
Basic Problem:
So, I'm trying to figure out how to calculate the gravitational force of the earth. I am using Desmos to graph the equation so that will explain where $x$ and $y$ come from. Whenever I ...
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Energy needed to stop the Earth's inner core ---and its effects?
As you will most possibly know, a misreading of this paper by the media caused kind of a "panic" about how the Earth's inner core had stopped or even reversed its rotation and its "...
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Why do geysers have an almost constant period between eruptions?
I was wondering about how can geysers be so precisely predicted. For example, I was in the Yellowstone Park, and it amazed me how the eruption of the Old Faithful was accurately predicted. Also, it ...
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How exactly does the Moon stabilizes Earth axial tilt?
There are many references regarding the Moon stabilizing the tilt of the Earth's rotational axis. I'd like to see some support for that claim, more than non-sequitur handwaving "Moon causes tides,...
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The radius of Earth is 4 times the radius of the moon. Estimate the acceleration due to gravity on the surface of the moon [closed]
I have derived an expression here which just needs the ratio of the densities of the Earth and its moon. My question is how do I go about finding this ratio or is there another way to approach this ...
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CMB dipole anisotropy maping to earth visualization
I do not see how this dipole anisotropy is due to the motion of the earth (and thus a doppler effect). Does anyone have a visualization of how this maps onto the earth and the motion of the earth such ...
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Is there a distortion of Earth's electric field by high objects, especially man-made?
Recently I've read one of Dr. Feynman's lectures about storms and lightnings. This one to be exact: https://www.feynmanlectures.caltech.edu/II_09.html
There he said, that human has the same charge as ...
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If the rock boundary exists, how did the planet Theia manage to collide with Earth? [closed]
Because it wasn't orbiting it, but in an errant orbit, but coinciding with that of the earth.
Much of its matter was absorbed by the Earth, and part was thrown into space, grouping together and ...
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Have rocket float into upper atmosphere via balloon [duplicate]
I'm assuming a majority of the fuel used in a rocket to say get to the moon is involved in escaping earth's gravity.
So why can't we create a smaller weighing rocket, with less fuel to carry and ...
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Centre of Gravity of Earth-Moon Elevator [closed]
Suppose you have a cylindrical elevator that resembles a rod of mass $m$, cross-sectional area $A$ and uniform density $\rho$, with a length $L$ spanning the distance between the Earth and the Moon. ...
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How do surface temperatures drop in response to optical depth?
I'm trying to come up with a super simple estimate for how atmospheric surface temperatures would be affected by a substance overhead with some optical depth $\tau$. I'll assume that the sun is always ...
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Questions regarding the mention of a "flat, nonrotating earth" in NASA Reference Publication 1207
I have some questions regarding the document
NASA Reference Publication 1207, "Derivation and Definition of a Linear Aircraft Model", E.L. Duke et al. (1988).
which states, in its abstract,...
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On the Melting of the Arctic Ice [closed]
I have read that:
Polar ice caps are melting as global warming causes climate change. We lose Arctic sea ice at a rate of almost 13% per decade, and over the past 30 years, the oldest and thickest ice ...
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Is Earth's surface gravity termed $g$ derived from Newton's universal law of gravity?
Trying to apply the basic Newton law $F = m a$ to a falling apple and a paper clip I encountered a problem I consider a beginner's: The fact that all objects are subject to the same acceleration ...
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