Explanation
The maximum height of mountain on earth depends upon shear modulus of rock.
At the base of the mountain, the stress due to all the rock on the top should be less than the
critical shear stress at which the rock begins to flow.
Suppose the height of the mountain
is h and the density of
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Explanation
elasticity is the tendency of a body to oppose the change in its shape and size ( basically its configuration).
Steel, because a body is said to be more elastic depending on how fast it gains its original shape after removal of external (deforming) force.
When a force is applied to steel it is deformed
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EXPLANATION
Firstly we need to understand what is gravitational potential energy .
It is defined as the amount of work done in bringing a body from infinity to a point of gravitational region /space is called as gravitational potential energy.
that is given by :
U = -G Mm/r
G = Universal gravitational constant
M = mass of the earth
m =
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Explanation
Advantages of reflecting over refracting telescope are :
Mirrors can be made bigger than lenses in size.
No chromatic aberration.
In case parabolic mirror is used, then no spherical aberration.
less costly .