Concept explainers
(a)
To Calculate: The increasing factor of the intensity.
(a)
Answer to Problem 18P
The intensity is increased by a factor of 9 if the amplitude of a sound wave is tripled.
Explanation of Solution
Given info:
The amplitude of a sound wave is triple.
Formula used:
The intensity is given as,
Here,
Calculation:
According to the given formula, the intensity is directly proportional to the square of the amplitude of the wave. Therefore, when the amplitude of the sound wave is tripled, then intensity becomes,
Conclusion:
Hence, the intensity is increased by a factor of 9.
(b)
To Calculate: The change in the sound level in dB.
(b)
Answer to Problem 18P
The sound level is increased by a factor of
Explanation of Solution
Given:
The intensity is increased by a factor of 9 if the amplitude of a sound wave is tripled.
Formula used:
The intensity is given as,
Here,
Calculation:
Now, substitute the value of first intensity and second intensity which is the 9 times of the first one.
The sound level is,
Conclusion:
The change in sound level is
Chapter 12 Solutions
Physics: Principles with Applications
Additional Science Textbook Solutions
An Introduction to Thermal Physics
College Physics: A Strategic Approach (4th Edition)
Applied Physics (11th Edition)
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
University Physics with Modern Physics (14th Edition)
Physics: Principles with Applications
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON