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Mechanical Properties of Fluids
Question
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Why do the hairs of a shaving brush cling together when taken out of water?

Answer

The hairs of a shaving brush cling together when taken out of water as a result of surface tension. The free surface of water tries to acquire a minimum surface area. 

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Some More Questions From Mechanical Properties of Fluids Chapter

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.

What is the direction of pressure?

What is the direction in which pressure exerts force on the walls of a container?

What is the SI unit of pressure?