Ch 14 HW 014-3 Streamline flow of a viscous fluid is called flow Q14-7 Each cate

Question

Ch 14 HW 014-3 Streamline flow of a viscous fluid is called flow Q14-7 Each category of arterial sections in a vascular bed consists of a number of nearly iden- tical arteries inwith each other. 014-8 The arterial sections of a vascular bed are in with each other. Q14-9 Is the flow resistance defined only for laminar flow? Q14-10 If a fluid is forced through a channel, which type of flow requires the least energy to sustain, laminar or turbulent flow? 06) In ceatrifegation, the sedismentation velocity,()ss a) directly proportional to viscosity (n b) does not depend on viscosity (n b) inversely proportional to viscosity ( d) depends oaly on deasity of uid 7) The fnow resistance Ris defined as the ratio of the pressure drop to the a) viscosity bi radius c) length di flow rate The viscous drag force os a sphere of radius 10 m moves with velocity 2x10 ms1 in a fluid of (viscosity as 2x10s Pas) is: 08) a9) In a mixture of two kinds of solutes, the larger umolecules will sedimest.....Msmaller one a) equal to bi slower than cj faster tisn dy in opposite directont Q10) In centrifngation, with a radius (r) and al angular relocity(, the centripetal acceleration (a) i: a) er di er

Explanation / Answer

Q6)ans

According to the concept of the mechanical properties of the fluids

The sedimentation velocity is inversely proportional to the viscosity

The correct option is B

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Q7)ans

The flow resistance of the liquid R=r^4*P/V*L

Basing on this equation

The flow resistance Rf=P/L

The correct option is C

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Q8)ans

Given that

Radius R=10^-4m

Velocity V=2*10^-2 m/s

Viscosity =2*10^-5 pa

Now we find the viscous force

Viscous force F=6rvn

=6*3.14*10^-4*2*10^-2*2*10^-5

=75.36*10^-11 N=7.5*10^-10 N

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Q10)ans

The centripetal acceleration =v^2/r

=(wr)^2/r

=rw^2

The correct option D

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