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11-11-2022
Physics

Answered

Human blood flows from the aorta to the capillaries. A girl has an aorta radius of 12.6 mm. Assume she has 7 billion capillaries in the body, the capillaries radius average 4 µm (micrometer), and the blood speed average 0.5 mm/s in the capillaries. The blood speed is _____ mm/s in the aorta.

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