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First Year Physics Fluid Dynamics


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Class 9Class 10First YearSecond Year
ExplaintheworkingofacarburetorofamotorcarusingBernoullisprincipleExplain the working of a carburetor of a motorcar using Bernoullis principle

Explain how the swing is produced in a fast moving cricket ball.
Explain how the swing is produced in a fast moving cricket ball.

Explainhowtheswingisproducedinafastmovingcricketball.Explain how the swing is produced in a fast moving cricket ball.

For which position will the maximum blood pressure in the body have the smallest value. (a) Standing up right (b) Sitting (c) Lying horizontally (d) Standing on ones head?
For which position will the maximum blood pressure in the body have the smallest value. (a) Standing up right (b) Sitting (c) Lying horizontally (d) Standing on ones head?

Forwhichpositionwillthemaximumbloodpressureinthebodyhavethesmallestvalue.(a)Standingupright(b)Sitting(c)Lyinghorizontally(d)Standingononeshead?For which position will the maximum blood pressure in the body have the smallest value. (a) Standing up right (b) Sitting (c) Lying horizontally (d) Standing on ones head?

What gauge pressure is required in the city mains for a stream flow a fire hose connected to the city mains to reach a vertical height of 15 \mathrm{~m} ?
What gauge pressure is required in the city mains for a stream flow a fire hose connected to the city mains to reach a vertical height of  15 \mathrm{~m}  ?

Whatgaugepressureisrequiredinthecitymainsforastreamflowafirehoseconnectedtothecitymainstoreachaverticalheightof15 m?What gauge pressure is required in the city mains for a stream flow a fire hose connected to the city mains to reach a vertical height of 15 \mathrm{~m} ?

Explain the difference between laminar flow and turbulent flow.
Explain the difference between laminar flow and turbulent flow.

Explainthedifferencebetweenlaminarflowandturbulentflow.Explain the difference between laminar flow and turbulent flow.

An airplane wing is designed so that when the speed of the air across the top of the wing is 450 \mathrm{ms}^{-1} the speed of air below the wing is 410 \mathrm{~ms}^{-1} . What is the pressure difference between the top and bottom of the wings? (Density of air =1.29 \mathrm{kgm}^{-3} ).
An airplane wing is designed so that when the speed of the air across the top of the wing is 450  \mathrm{ms}^{-1}  the speed of air below the wing is  410 \mathrm{~ms}^{-1} .  What is the pressure difference between the top and bottom of the wings? (Density of air  =1.29 \mathrm{kgm}^{-3}  ).

Anairplanewingisdesignedsothatwhenthespeedoftheairacrossthetopofthewingis450ms1thespeedofairbelowthewingis410 ms1.Whatisthepressuredifferencebetweenthetopandbottomofthewings?(Densityofair=1.29kgm3).An airplane wing is designed so that when the speed of the air across the top of the wing is 450 \mathrm{ms}^{-1} the speed of air below the wing is 410 \mathrm{~ms}^{-1} . What is the pressure difference between the top and bottom of the wings? (Density of air =1.29 \mathrm{kgm}^{-3} ).

The radius of the aorta is about 1.0 \mathrm{~cm} and the blood flowing through it has a speed of about 30 \mathrm{cms}^{-1} . Calculate the average speed of the blood in the capillaries using the fact that although each capillary has a diameter of about 8 \times 10^{-4} \mathrm{~cm} there are literally millions of them so that their total cross section is about 2000 \mathrm{~cm}^{2} .
The radius of the aorta is about  1.0 \mathrm{~cm}  and the blood flowing through it has a speed of about  30 \mathrm{cms}^{-1} . Calculate the average speed of the blood in the capillaries using the fact that although each capillary has a diameter of about  8 \times 10^{-4} \mathrm{~cm}  there are literally millions of them so that their total cross section is about  2000 \mathrm{~cm}^{2} .

Theradiusoftheaortaisabout1.0 cmandthebloodflowingthroughithasaspeedofabout30cms1.Calculatetheaveragespeedofthebloodinthecapillariesusingthefactthatalthougheachcapillaryhasadiameterofabout8×104 cmthereareliterallymillionsofthemsothattheirtotalcrosssectionisabout2000 cm2.The radius of the aorta is about 1.0 \mathrm{~cm} and the blood flowing through it has a speed of about 30 \mathrm{cms}^{-1} . Calculate the average speed of the blood in the capillaries using the fact that although each capillary has a diameter of about 8 \times 10^{-4} \mathrm{~cm} there are literally millions of them so that their total cross section is about 2000 \mathrm{~cm}^{2} .

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