What should be the maximum average velocity of water in a tube of diameter 25mm so that the flow is laminar?

In deriving Bernoulli’s equation, we equated the work done on the fluid in the tube to its change in the potential and kinetic energy, (a) What is the largest average velocity of blood flow in an artery of diameter 2 xx10^-3 m if the flow must remain laminar? (b) Do the dissipative forces become more important as the fluid velocity increases? Discuss qualitatively.

(a) What is the largest average velocity of blood flow in an artery of radius 2 xx10-^3 m if the flow must remain laminar? (b) What is the corresponding flow rate? (Take viscosity of blood to be 2.084 xx 10^-3 Pa s).

The capillary rise in a tube of diameter 1mm when surface tension of water is 0.06 Nm^-1 is

What is the angular velocity at any point on the equator so that the body feels weightlessness?

The work function of a metal is 3.45 eV. Calculate what should be the maximum wave length of a photon that can eject photo - electron from the metal.

What should be the angle between the force and displacement for minimum and maximum work.

Under what conditions is the average velocity equal to instantaneous velocity.