Help Needed!! A patient is to be given a blood transfusion. The blood is to flow

Question

Help Needed!!

A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle to a needle inserted in the vein, as shown in the figure. The inside diameter of the 3.9-cm-long needle is 0.40 mm and the required flow rate is 3.9 cm3 of blood per minute. How high should the bottle be placed above the needle? The density of blood is 1.05 times 103 Kg/m3 and the viscosity of blood is 4.00 times 10-3 Pa.s. Assume the blood pressure is 18 torr above atmospheric pressure. Use 9.81 m/s2 for g.

Explanation / Answer

A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle to a needle inserted in the vein (Fig. 10

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