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You are injecting a solution (viscosity of 1.5 * 10-3 Pa-Sec) into a vein. The pressure in the vein is 15 mmHg (2000 Pa) a) The plunger has an area of 0.5cm2, and you apply a force of 0.3N. What is the pressure on the plunger? b) The radius of the needle is 0.2mm, and has a length of 2cm. What is the flow rate of the solution? c) The solution enters a vein with a radius of 2mm. What is its speed? d) Downstream, the vein narrows to a radius of 1mm. Now, what is its speed?
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