Pressure

Coefficient of volume change (mv) is given by -
Where a_v is coefficient of compressibility and Co is initial void ratio corresponding to the initial pressure.

When the water surface coincides the top edge of a rectangular vertical 40m (wide) x 3m (deep), then the depth of center of pressure is.

In an open tank, water in present to a depth of 3 m and above it oil in present to a depth of 2 m. The intensity of pressure at the interface of the two fluid layers will be:
(Given specific gravity of oil = 0.7)

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: The air that rushes horizontally into a low pressure area changes into a whirling mass, because of the rotatory motion of the earth about its own axis.
Reason R: The central portion of this air mass with low pressure acts like a cluminey where air gets lifted, expands, cools and finally gets condensed.
In the light of the above statements, choose the correct answer from the options given below :

A large air mass swirling around a low pressure area is known as -

Give below are two statements:
Statement - I : The pressure on the base of a liquid column will depend upon the shape of the column.
Statement - II: The pressure over the free surface of a fluid at rest will vary with the location.
In the light of the above statements, choose the correct answer from the options given below :