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How long is a fire extinguisher still usable? How do you safely dispose of an old one?

How long is a fire extinguisher still usable? How do you safely dispose of an old one?

Answer:

This exchange into proved via Newton. Given an merchandise moving with some speed, and a gravitational tension equivalent to F GMm/r^2, then there are 3 possible curved paths the article could save on with. It relies upon on how briskly the article is moving. a million) An open direction in the form of a hyperbola. It is presented in from infinity and is going lower back to infinity. it somewhat is an merchandise moving above escape speed. 2) A closed direction in the form of an ellipse. 3) A parabola, if the article is purely on the boundary of power between the closed and open direction. Newton confirmed that if the strain is proportional to a million/r^2 and the direction is closed, that is going to likely be an ellipse. So it fairly is a effect of the reality that gravity is an inverse sq. tension.
Kewl, I'm kind of the same way only instead of hurling lightning it's usually a lamp or my dog
Gravity is NOT caused by movement. It is purely a function of mass, modified by distance. Think of a weight resting on a suspended rubber sheet. The weight does not have to move to distort the sheet. That's something like the way gravity works. If the planets were to stop moving relative to the Sun, they would fall into it. If they were to change their orbital speed, their obital distance would change (slower-closer, faster-farther). If they moved fast enough, they would escape entirely. But the gravity field around the Sun would not change. It's a matter of how close a planet is to its star and how fast it's moving.
The other posters are right. BUT to get really picky, if the sun were to truly stop moving, that means it would no longer orbit the center of the Milky Way galaxy! So it should then fall into the center of the galaxy, becoming part of the black hole that is supposed to be there. (And even more technical, even our galaxy is moving in relation to other galaxies so unless you freeze-frame the entire universe, there is no such thing as stationary)

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