Physics, 17.01.2020 15:31, hamilclips6805

The thermosphere has air pressure than the mesosphere.

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I think the correct answer from the choices listed above is the second option. The thermosphere has less air pressure than the mesosphere because the farther away you are from the surface of the earth the lesser amount of gases present.

answered: azduce

Less

Explanation:

The thermosphere is located above the mesosphere. The atmospheric pressure decreases with increasing altitude.

The atmospheric pressure is caused by the weight of the air above us. The thermosphere has lesser pressure because the air density is low here and the layers above it has lesser mass. Since they no not weigh much their weight cannot create greater pressure.

The relationship between pressure and altitude is

$P_{h}=P_{o} e^{\frac{-mgh}{kT}}$

Where

$P_{o}$ is the pressure at sea level.

m is the molar mass of air

g is the acceleration due to gravity

h is the altitude

k is the Boltzmann's constant

T is the temperature

answered: Guest

their crystal patterns have been disrupted by stress

answered: Guest

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

$x(t)=ax(x-6)$

where $a$ is unknown. because the position is parabolic, there is symmetry about the midpoint at $t=3$ , and we know that

$x(3)=10\implies -9a=10\implies a=-\dfrac{10}9$

so that the position function is

$x(t)=-\dfrac{10}9x(x-6)$

which means the velocity is

$v(t)=\dfrac{\mathrm dx}{\mathrm dt}=-\dfrac{20}9x+\dfrac{60}9$

then the total distance traveled is

$\displaystyle\int_{t=0}^{t=6}|v(t)|\,\mathrm dt=\left\{\int_{t-0}^{t=3}-\int_{t=3}^{t=6}\right\}v(t)\,\mathrm dt=20$

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at $x=0$ and ends at $x=0$ , so its displacement is 0.

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The thermosphere has air pressure than the mesosphere.

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