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Defend the statement that 100% of the electrical energy

Conceptual Physics | 12th Edition | ISBN: 9780321909107 | Authors: Paul G. Hewitt ISBN: 9780321909107 29

Solution for problem 34E Chapter 18

Conceptual Physics | 12th Edition

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Conceptual Physics | 12th Edition | ISBN: 9780321909107 | Authors: Paul G. Hewitt

Conceptual Physics | 12th Edition

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Problem 34E

Defend the statement that 100% of the electrical energy that goes into lighting a lamp is converted to thermal energy. Are the first and the second laws of thermodynamics violated?

Step-by-Step Solution:
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Solution 34E This statement is trivially wrong. From everyday experience we can say that 100% of electrical energy the lamp gets does not convert to thermal energy. Because most of the energy does convert into light energy. The remaining energy gets converted into heat energy, some of the energy is lost due to the resistance of the wire and all. If all the energy gets converted into heat energy, the bulb will not be able to give a little bit of light too. But if it happens, that all the electrical energy gets converted into thermal energy, then, these things will happen. STEP 1: The bulb will not glow at all first of all. The 1st law is the law of conservation which...

Step 2 of 3

Chapter 18, Problem 34E is Solved
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Textbook: Conceptual Physics
Edition: 12
Author: Paul G. Hewitt
ISBN: 9780321909107

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Defend the statement that 100% of the electrical energy

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