A needle with a piston is used to extract blood from the arm of a patient. Solve for the ave. speed of the blood flow, i

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answerhappygod
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A needle with a piston is used to extract blood from the arm of a patient. Solve for the ave. speed of the blood flow, i

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A needle with a piston is used to extract blood from the arm ofa patient. Solve for the ave. speed of the blood flow, in mm/s, inthe needle if the radius of the piston is 2.5mm and the diameter ofthe needle is 0.5mm and length of 10mm. Take into account the bloodwithdrawing speed of 6mm/s and air leaks around the piston at20mm3/s.
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