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Heat is transferred from an area where the temperature is

Physics with MasteringPhysics | 4th Edition | ISBN: 9780321541635 | Authors: James S. Walker ISBN: 9780321541635 54

Solution for problem 46P Chapter 16

Physics with MasteringPhysics | 4th Edition

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Physics with MasteringPhysics | 4th Edition | ISBN: 9780321541635 | Authors: James S. Walker

Physics with MasteringPhysics | 4th Edition

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Problem 46P

Problem 46P

Heat is transferred from an area where the temperature is 20 °C to an area where the temperature is 0 °C through a composite slab consisting of four different materials, the with the same thickness. The temperatures at the interface between the of the materials are given in. Rank the four materials in order of increasing thermal conductivity. Indicate ties where appropriate.

FIGURE

Step-by-Step Solution:

Solution 46P

Step 1 of 1

We have to rank the four materials in order of increasing thermal conductivity when heat is transferred from an area where the temperature is 20 °C to an area where the temperature is 0 °C through a composite slab consisting of four different materials,with the same thickness.

If the thermal conductivity of a material is , its cross sectional area is and its length the heat exchanged in the time  is

  

Since, the heat flowthrough each slab is the same and also and are the same, the thermal conductivity depends on the temperature difference between the ends of the slab.

That is

             

Thus, the greatest thermal conductivity  corresponds to the material with the smallest temperature difference  

Hence, in order of increasing thermal conductivity, we have

Therefore, the four materials in order of increasing thermal conductivity is .

Step 2 of 1

Chapter 16, Problem 46P is Solved
Textbook: Physics with MasteringPhysics
Edition: 4
Author: James S. Walker
ISBN: 9780321541635

This full solution covers the following key subjects: Where, materials, area, temperature, order. This expansive textbook survival guide covers 32 chapters, and 3833 solutions. Physics with MasteringPhysics was written by and is associated to the ISBN: 9780321541635. The answer to “Heat is transferred from an area where the temperature is 20 °C to an area where the temperature is 0 °C through a composite slab consisting of four different materials, the with the same thickness. The temperatures at the interface between the of the materials are given in. Rank the four materials in order of increasing thermal conductivity. Indicate ties where appropriate. FIGURE” is broken down into a number of easy to follow steps, and 63 words. The full step-by-step solution to problem: 46P from chapter: 16 was answered by , our top Physics solution expert on 07/27/17, 10:59AM. Since the solution to 46P from 16 chapter was answered, more than 453 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: Physics with MasteringPhysics, edition: 4.

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Heat is transferred from an area where the temperature is