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Physics with MasteringPhysics | 4th Edition | ISBN: 9780321541635 | Authors: James S. Walker
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Measuring Hearing Loss To determine the amount of

Chapter 14, Problem 96GP

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QUESTION:

Problem 96GP

Measuring Hearing Loss To determine the amount of temporary hearing loss load music can cause in humans, researchers studied a group of 20 adult females who were exposed to 110-dB music far 60 minutes. Eleven of the 20 subjects showed a 20.0-dB reduction in hearing sensitivity at 4000 Hz, What is the intensity corresponding to the threshold of hearing for these subjects?

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QUESTION:

Problem 96GP

Measuring Hearing Loss To determine the amount of temporary hearing loss load music can cause in humans, researchers studied a group of 20 adult females who were exposed to 110-dB music far 60 minutes. Eleven of the 20 subjects showed a 20.0-dB reduction in hearing sensitivity at 4000 Hz, What is the intensity corresponding to the threshold of hearing for these subjects?

ANSWER:

Solution 96GP

Step 1 of 2:

After a research study, the subjects showed a 20.0 dB reduction in hearing sensitivity at 4000 Hz. We are going to find the corresponding intensity to the threshold of hearing of the subjects.

The intensity level β = 20.0 dB

The lowest detectable intensity Io = 10-12 W/m2

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