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Mechanical Properties of Fluids
Question
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Why do the two mercury drops coalesce when brought together?

Answer

Molecules of mercury coalesce due to strong cohesive force between the mercury molecules. 

Cohesive force is the force of attraction between like molecules. 

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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?