The noise level in a factory with 12 identical machines running is 80 dB. At night, the factory must comply with local noise regulation not to exceed 75 dB. How many machines can be used at the night shift

The noise level in a factory with 12 identical machines running is 80 dB. At night, the factory must comply with local noise regulation not to exceed 75 dB. How many machines can be used at the night shift

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter26: Applications Of Refrigeration Systems

Section: Chapter Questions

Problem 16RQ: A(n)_______varies the frequency of an electronically altered sine wave, which affects the speed of...

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The noise level in a factory with 12 identical machines running
is 80 dB. At night, the factory must comply with local noise
regulation not to exceed 75 dB. How many machines can be
used at the night shift

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