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skelet666 [1.2K]
3 years ago
13

The atmosphere of earth does not escape into the space but remains attached to earth's surface why??

Physics
1 answer:
Alexeev081 [22]3 years ago
7 0

Just like any other gas or mixture of gases, the gas molecules are
zipping around in all different directions and with a whole range of
different speeds. 

Those that happen to be moving at a speed greater than the Earth's
"escape velocity", AND are pointed away from Earth, AND don't hit
any other molecules before they escape, are lost.

With the combination of Earth's escape velocity, and the temperatures,
thickness, and density of the atmosphere, that process happens slowly
enough to have maintained an atmosphere around this planet until now.

Personally, I hope it hangs around for a while longer.  But with the constant
increase in temperature that's been going on, you never know . . .

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Two forces act in opposite directions on a wood block. What will happen if the forces are unbalanced?
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Answer:

D

Explanation:

If two unequal forces act in opposite directions, one larger force must cancel out the smaller force,

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Take for example a game of tug-of-war; there are two  OPPOSITE forces (groups of people) acting on the rope, one force is pulling with a force in the negative direction while the other force is pulling in the positive direction.

If the forces on the rope were unequal, then the stronger force (group) will pull everything in their direction.

The same will happen on two unequal forces of opposite directions acting on a wooden block. Therefore, since the resultant force will have a non-zero magnitude and direction, there will be a change in the block's motion and position.

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D. If a home were wired in series, every light and appliance would have to be turned on in order for any light or appliance to work.

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On the contrary, when the appliances are connected in parallel, they are connected in different branches, so if one of them is switched off, the other branches continue working unaffacted by it.

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