Question: An intravenous (IV) system is supplying saline solution to a patient at the flow rate of 0.120 cm/s through a needle of radius 0.150

An intravenous (IV) system is supplying saline solution to a patient at

An intravenous (IV) system is supplying saline solution to a patient at the flow rate of 0.120 cm/s through a needle of radius 0.150 mm and length 2.50cm. What pressure is needed at the entrance of the needle to cause this flow, assuming the viscosity of the saline solution to be the same as that of water (n- 1103 Pas? The gauge pressure P of the blood in the patient's vein is 8.00 mm Hg (1.066-103 N/m2). (Assume laminar flow that the temperature is 20 C)

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