Saline solution is delivered into a patient’s vein through a needle. The saline solution has a viscosity of 0.37×10−3 N s m−2, a density of 1060 kg m−3, and is delivered through a 7 cm long needle with an internal diameter of 0.24 mm directly into the patient’s vein in which the blood pressure is 130 mm Hg. The saline solution must be delivered at a flow rate of 0.04×10−6 m3s−1. How high must the saline solution be suspended in order to achieve this flow rate? (Ignore variations between systolic and diastolic blood pressure when doing this question. Also assume that the viscosity of the saline solution is low enough that it does not affect the flow of the solution through the IV tube, only the needle itself.)
Saline solution is delivered into a patient’s vein through a needle. The saline solution has a viscosity of 0.37×10−3 N s m−2, a density of 1060 kg m−3, and is delivered through a 7 cm long needle with an internal diameter of 0.24 mm directly into the patient’s vein in which the blood pressure is 130 mm Hg. The saline solution must be delivered at a flow rate of 0.04×10−6 m3s−1. How high must the saline solution be suspended in order to achieve this flow rate? (Ignore variations between systolic and diastolic blood pressure when doing this question. Also assume that the viscosity of the saline solution is low enough that it does not affect the flow of the solution through the IV tube, only the needle itself.)
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