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Mechanical Properties Of Fluids

Question

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Oil is poured to calm the sea waves. Explain why.

Solution

Oil when poured over water spreads over the surface of water because of surface tension. When the wind blows, the surface film of oil is carried in the forward direction, leaving behind the water of higher surface tension. This left behind water exerts a backward pull thus, opposing the motion of the surface by the wind.

Some More Questions From Mechanical Properties of Fluids Chapter

Do intermolecular or inter-atomic forces follow inverse square law?

Why solids have definite shape while liquids do not have definite shape?

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?

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