Question

Please answer fast please answer it's urgent


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Answer 1

Answer:

Thank u

Explanation:

The main difference between aneroid and mercury barometer is that aneroid barometer measures the atmospheric pressure using the expansion of a metal whereas mercury barometer measures the atmospheric pressure by adjusting the height of mercury inside a tube.

Hydrostatic pressure ( Water )  

Hydrostatic pressure refers to the pressure exerted by a fluid (gas or liquid) at any point in space within that fluid, assuming that the fluid is incompressible and at rest. Pressure within a liquid depends only on the density of the liquid, the acceleration due to gravity, and the depth within the liquid.

The force that the book exerts on the table is not a gravitational force, it's a normal force.

Answer 2

Answer:

The pressure at the base of each vessel is given by ρgh where ρ is a density of water, g is acceleration due to gravity, and h is the height of water column in that vessel.

So pressure at a base is directly proportional to the height of water level.

So decreasing order of pressure is D>B>A>C

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