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Mechanical Properties Of Fluids

Question
CBSEENPH11019997
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Explain why:

(c) The size of the needle of a syringe controls flow rate better than the thumb pressure exerted by a doctor while administering an injection

Solution

The small opening of a syringe needle controls the velocity of the blood oozing out. This is as a result of the equation of continuity.
At the constriction point of the syringe system, the flow rate suddenly increases to a high value for a constant thumb pressure applied.

Some More Questions From Mechanical Properties of Fluids Chapter

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?

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