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Mechanical Properties Of Fluids

Question

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Why does coating of glycerine over the glass window prevent raindrops from sticking to it?

Solution

The angle of contact of water with clean glass is less than 90° i.e., acute. Therefore, the water sticks with glass window. By coating the layer of glycerine over glass window, the angle of contact becomes greater than 90° and makes the glass window non-sticky.

Some More Questions From Mechanical Properties of Fluids Chapter

What is fluid?

What is hydrostatics?

What is hydrodynamics?

Can fluids withstand tangential stress?

Can fluids withstand normal stress?

Why the fluids do not have any modulus of rigidity?

Which phase of fluid is more compressible?

What is an ideal liquid?

Do liquids exert pressure?

Define pressure.

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