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BIO Basal Metabolic Rate. The basal metabolic rate is the

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 116P Chapter 17

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

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Problem 116P

BIO Basal Metabolic Rate. The ?basal metabolic rate is the rate at which energy is produced in the body when a person is at rest. A 75-kg (165-lb) person of height 1.83 m (6 ft) has a body surface area of approximately 2.0 m2. (a) What is the net amount of heat this person could radiate per second into a room at 18°C (about 65°F) if his skin’s surface temperature is 30°C? (At such temperatures, nearly all the heat is infrared radiation, for which the body’s emissivity is 1.0, regardless of the amount of pigment.) (b) Normally, 80% of the energy produced by metabolism goes into heat, while the rest goes into things like pumping blood and repairing cells. Also normally, a person at rest can get rid of this excess heat just through radiation. Use your answer to part (a) to find this person’s basal metabolic rate.

Step-by-Step Solution:

Solution 116P Step 1 The rate of heat radiation is given by dQ 4 4 dt = A(T 1 T 2 ) From the given problem we know that = 1.0 8 2 4 = 5.67 × 10 W/m K 2 A = 2.0 m T 1 30°C = 303 K T = 18°C = 291 K 2 dQ = (1.0)(5.67 × 108 W/m K )(2.0 m )[(303 K) (291 K) ] = 142.6 W dt So the person can radiate 142.6 J of heat per second.

Step 2 of 2

Chapter 17, Problem 116P is Solved
Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

The answer to “BIO Basal Metabolic Rate. The ?basal metabolic rate is the rate at which energy is produced in the body when a person is at rest. A 75-kg (165-lb) person of height 1.83 m (6 ft) has a body surface area of approximately 2.0 m2. (a) What is the net amount of heat this person could radiate per second into a room at 18°C (about 65°F) if his skin’s surface temperature is 30°C? (At such temperatures, nearly all the heat is infrared radiation, for which the body’s emissivity is 1.0, regardless of the amount of pigment.) (b) Normally, 80% of the energy produced by metabolism goes into heat, while the rest goes into things like pumping blood and repairing cells. Also normally, a person at rest can get rid of this excess heat just through radiation. Use your answer to part (a) to find this person’s basal metabolic rate.” is broken down into a number of easy to follow steps, and 148 words. This textbook survival guide was created for the textbook: University Physics, edition: 13. University Physics was written by and is associated to the ISBN: 9780321675460. The full step-by-step solution to problem: 116P from chapter: 17 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. Since the solution to 116P from 17 chapter was answered, more than 468 students have viewed the full step-by-step answer. This full solution covers the following key subjects: Person, heat, rate, Rest, metabolic. This expansive textbook survival guide covers 26 chapters, and 2929 solutions.

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