9- (a) A 74.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, and 5.00% above water when his lungs are fullI. Calculate the volume of air heinhales-called his lung capacity-in liters.(b) Does this lung volume seem reasonable?O NoO Yes

(a) A 74.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, and 5.00% above water when his lungs are full. Calculate the volume of air he inhales-called his lung capacity-in liters. (b) Does this lung volume seem reasonable? O No O Yes

(a) A 74.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, and 5.00% above water when his lungs are full. Calculate the volume of air he inhales-called his lung capacity-in liters. (b) Does this lung volume seem reasonable? O No O Yes

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter14: Fluid Mechanics

Section: Chapter Questions

Problem 74P: A 75.0-kg floats in freshwater 3.00% of his volume above water when his are empty, and 5.00% of his...

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Question

(a) A 74.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, and 5.00% above water when his lungs are fullI. Calculate the volume of air he
inhales-called his lung capacity-in liters.
(b) Does this lung volume seem reasonable?
O No
O Yes

Expert Solution

Step 1

Given :

Mass of a man (m) = 74 kg

Initial density (ρ_i) = (1 - 0.03)(ρ_water)

ρ_i = 0.97(1000) = 970 kg/m³

Final density (ρ_f) = (1 - 0.05)(ρ_water)

ρ_f = 0.95(1000)

ρ_f = 950 kg/m³

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