<11Problem 14.92A machine shop has 120 equally noisy machinesthat together produce an intensity level of 92 dB.Part AIf the intensity level must be reduced to 88 dB, how many machines must be turned off?Express your answer as an integer.SubmitPrevious Answers Request AnswerX Incorrect; Try Again; 4 attempts remainingProvide FeedbackP PearsonCopyright © 2020 Pearson Education Inc. All rights reserved.| Terms of Use | Privacy Policy | Permissions | ContactMacBook Air80888DIIDDF3F4F5F6F7F8F9F10#3$&)4.78.ER.YPこの< CO

Given data The number of machines in the shop is n = 120. The intensity level produced by the…

A machine shop has 120 equally noisy machines that together produce an intensity level of 92 dB. - Part A If the intensity level must be reduced to 88 dB, how many machines must be turned off Express your answer as an integer. ?

A machine shop has 120 equally noisy machines that together produce an intensity level of 92 dB. - Part A If the intensity level must be reduced to 88 dB, how many machines must be turned off Express your answer as an integer. ?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Shock Waves

Shock waves are common in continuum mechanics, and their dominance is attributable to the fact that they are stronger (or even less) compressible. Substantial perturbations propagated as sudden dynamic changes of a compressible medium supersonically. Shock waves are all around us in our daily lives. Lightning, earthquakes, volcanic eruptions, and meteorite impact all produce them in nature. Even the earth, which is protected by its magnetic field, generates a shock wave as in solar wind that travels around 20 Earth radiuses. These shock waves might be either constant, linked to the body, or unsteady, i.e., moving around with time. All of the shocks mentioned above can be damaging, so precautions must be taken to reduce their impact.

Question

<11
Problem 14.92
A machine shop has 120 equally noisy machines
that together produce an intensity level of 92 dB.
Part A
If the intensity level must be reduced to 88 dB, how many machines must be turned off?
Express your answer as an integer.
Submit
Previous Answers Request Answer
X Incorrect; Try Again; 4 attempts remaining
Provide Feedback
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