issance d'un son. La formule est P = 10log/. où mètre carré et I = 10-¹²W/m². Détermine d'une voiture si le niveau sonore est de 25 dB.
issance d'un son. La formule est P = 10log/. où mètre carré et I = 10-¹²W/m². Détermine d'une voiture si le niveau sonore est de 25 dB.
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter22: Introduction To Percents
Section: Chapter Questions
Problem 1A
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Question
Decibels are used to measure the power of a sound. The formula is
where is the intensity of sound in watts per square meter and
Determine the intensity of the engine noise inside a car if the sound level is 25 dB.
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