On a winter day, a certain house loses 5.20 × 10° J of heat from the warm 25°C interior to the cold 6°Cexterior.a) What is the change in entropy of the interior air of the house?AShouse =J/Kb) What is the change in entropy of the surrounding exterior air?ASsurroundingsJ/Kc) What is the overall change in entropy of the universe due to this heat exchange?AS universeJ/Kd) If a Carnot engine had been connected between the inside and outside of the house to mediate the heattransfer, how much work could it have done?WlostJe) What would the efficiency of this engine be?% efficiency =%3D

Answered: On a winter day, a certain house loses…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter15: Thermodynamics

Section: Chapter Questions

Problem 47PE: (a) On a winter day, a certain house loses 5.00108J of heat to the outside (about 500,000 Btu). What...

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Question

On a winter day, a certain house loses 5.20 × 10° J of heat from the warm 25°C interior to the cold 6°C
exterior.
a) What is the change in entropy of the interior air of the house?
AShouse =
J/K
b) What is the change in entropy of the surrounding exterior air?
ASsurroundings
J/K
c) What is the overall change in entropy of the universe due to this heat exchange?
AS universe
J/K
d) If a Carnot engine had been connected between the inside and outside of the house to mediate the heat
transfer, how much work could it have done?
Wlost
J
e) What would the efficiency of this engine be?
% efficiency =
%3D

Expert Solution

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As per Bartleby rules, we are to answer the first three sub-parts of a question when specific sub-parts are not requested. Please ask the remaining sub-parts in a different question. Continuing with our answer...

The change in entropy of an environment is given by $∆ S = {(\frac{Q}{T})}_{r e v}$ , where

$Q$ is the heat transfer,

T is the temperature of the environment.

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