A front is defined as a "boundary" that separates two masses of different air densities. I am not entirely sure, but I think the answers are either C or D, but I'm mostly convinced it's option D.
<span>So we want to know what happens to meteors that enter the Earth's atmosphere and experience air friction. So since most meteors that enter Earth's atmosphere are made out of ice and/or rocks, when they enter the atmosphere, they experience air friction and their temperature rises so high they either melt or burn up. So the correct answer is burns up. </span>
Answer:
1.97*10⁴N .He cannot survive.
Explanation:
The<em> </em><em>Tidal force</em> can be defined as the difference in force between center of two bodies like center of earth and other bodies.This force stretches the body too and fro from the center of mass of another body due to the difference in the gravitational force.
The tidal force is responsible for various phenomena like ocean tides,celestial body tearing up.
The tidal force is the effect of massive body gravitationally affecting another body.
The tidal force is the difference between the gravitational force of two bodies and directly proportional to the mass of body affecting another body and inversely proportional to the square of radius of the distance between center and the object.
Here let us consider height of person as 2m and d=1m
ΔF=
-
=GMm[
-
]
=(6.67*10⁻¹¹)(1.99*10³⁰)(1.0)[
-
}
ΔF=1.97*10⁴N.
Thus he cannot survive
Answer:
option 'b' and 'c'
Explanation:
when we throw ball in upward direction.
acceleration on the body will never be zero because there will always be acceleration due to gravity i.e. 'g' will be acting on it.
and force of 'mg' will also be acting on the body, where m is the mass of the body.
so,
at the top the parameters which will be zero will be velocity and speed.
at the top most point the ball will change it's direction for that velocity will have to be zero at that point.