Snorkeling by humans and elephants. When a person snorkels, the lungs are connected directly to the atmosphere through the snorkel tube and thus are at atmospheric pressure. In atmospheres, what is the difference Ap between this internal air pressure and the water pressure against the body if the length of the snorkel tube is (a)24 cm (standard situation) and (b)4.4 m (probably lethal situation)? In the latter, the pressure difference causes blood vessels on the walls of the lungs to rupture, releasing blood into the lungs. As depicted in the figure, an elephant can safely snorkel through its trunk while swimming with its lungs 4.4 m below the water surface because the membrane around its lungs contains connective tissue that holds and protects the blood vessels, preventing rupturing.

Snorkeling by humans and elephants. When a person snorkels, the lungs are connected directly to the atmosphere through the snorkel tube and thus are at atmospheric pressure. In atmospheres, what is the difference Ap between this internal air pressure and the water pressure against the body if the length of the snorkel tube is (a)24 cm (standard situation) and (b)4.4 m (probably lethal situation)? In the latter, the pressure difference causes blood vessels on the walls of the lungs to rupture, releasing blood into the lungs. As depicted in the figure, an elephant can safely snorkel through its trunk while swimming with its lungs 4.4 m below the water surface because the membrane around its lungs contains connective tissue that holds and protects the blood vessels, preventing rupturing.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter15: Fluid Mechanics

Section: Chapter Questions

Problem 9OQ: An ideal fluid flows through a horizontal pipe whose diameter varies along its length. Measurements...

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