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Back to 12.4 Viscosity and Laminar Flow; Poiseuille’s Law

12.4 Exercise 21

Avg difficulty 2.5

During a marathon race, a runner’s blood flow increases to 10.0 times her resting rate. Her blood’s viscosity has dropped to 95.0% of its normal value, and the blood pressure difference across the circulatory system has increased by 50.0%. By what factor has the average radii of her blood vessels increased?

OpenStax College Physics 2e, 12.4 Viscosity and Laminar Flow; Poiseuille’s Law, exercise 21

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.