4-The following data lists the rate at which work is done and the rate of heatgeneration (both in units of Watts) when a person is engaged in variousactivities:ACTIVITYSleepingWalkingRunningBicycle racingW/t050200400Qlt802008001600(a) Determine the total heat generated during a normal night of sleep, 8 hours.(b) Now determine both the total energy expended and the fraction of thisenergy that comes in the form of heat when a person runs for 30 minutes? (c)Now determine both the total energy expended and the fraction of this energythat comes in the form of work when a Tour de France racer races for 6 hours?(d) Assume that 5.7 x 105 J of energy is extracted from a 12 oz. soft drink viahuman metabolism... Determine for how long a person must sleep to burn thatamount of energy, how long a person must run, and how long a Tour de Franceracer must race.

W = Work done Q = Heat generated

Answered: 4-The following data lists the rate at…

4-The following data lists the rate at which work is done and the rate of heat generation (both in units of Watts) when a person is engaged in various activities:

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

4-The following data lists the rate at which work is done and the rate of heat
generation (both in units of Watts) when a person is engaged in various
activities:
ACTIVITY
Sleeping
Walking
Running
Bicycle racing
W/t
0
50
200
400
Qlt
80
200
800
1600
(a) Determine the total heat generated during a normal night of sleep, 8 hours.
(b) Now determine both the total energy expended and the fraction of this
energy that comes in the form of heat when a person runs for 30 minutes? (c)
Now determine both the total energy expended and the fraction of this energy
that comes in the form of work when a Tour de France racer races for 6 hours?
(d) Assume that 5.7 x 105 J of energy is extracted from a 12 oz. soft drink via
human metabolism... Determine for how long a person must sleep to burn that
amount of energy, how long a person must run, and how long a Tour de France
racer must race.

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Step 2: Calculate total heat generated during sleep

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Step 3: Calculate energy expended in 30 mins of run

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Step 4: Calculate energy expended in 6 hours of bicycling

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Step 5: Determine duration of sleep needed

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