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The low temperature of a freezer cooling coil is ?15°C,

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli ISBN: 9780130606204 3

Solution for problem 29P Chapter 15

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

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Problem 29P

Problem 29P

The low temperature of a freezer cooling coil is −15°C, and the discharge temperature is 30°C. What is the maximum theoretical coefficient of performance?

Step-by-Step Solution:

SolutionStep 1 of 3Given data Intensity of EM waves from sun above earth surface , I =1.4 kW/m 2 2 3 2 3 2Using 1 kW/m =1× 10 W/m I0=1.4 × 10 W/m Intensity that reaches the earth's surface, I = (80% I )0 I = ( 80 )1.4 × 10 W/m 2 100 Area of a rectangular model, A=(30 cm×50 cm)=1500 cm 2Using 1cm = 10 4 m 2 A=1500× 10 4 m =0.15m 2 Time , t=1 hourUsing 1 hr = 3600 s t = 3600 sTo find,Energy delivered to the back of a person, E=

Step 2 of 3

Chapter 15, Problem 29P is Solved
Step 3 of 3

Textbook: Physics: Principles with Applications
Edition: 6
Author: Douglas C. Giancoli
ISBN: 9780130606204

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The low temperature of a freezer cooling coil is ?15°C,