A small blood vessel near the skin surface has a radius of 10 µm, a length of 1 µm and the pressure drop along the blood vessel is 2.50 Pa. The viscosity of blood is 0.0027 Pa.s. i. What is the volume flow rate of blood through this blood vessel? What is the velocity of blood flow?

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Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.