The volume flow rate in an artery supplying the brain is 3.6 x 10-6 m3/s. a) If the radius of the artery is 5.2 mm, determine the average blood flow speed. b) Find the average blood speed at a constriction in the artery if the constriction reduces the radius to one – third of the original. Assume that the volume flow rate is the same as that in part (a).

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