Concept explainers
Sound Intensity The loudness of a sound is measured in decibels. The decibel level of a sound is given by the formula
a. Find the decibel levels of each of the following, rounding to the nearest decibel:
Whisper:
TV (average volume from 10 feet):
Loud music:
Jet aircraft (from 500 feet):
b. Which of the sounds above damages the average human ear?
c. Solve the given equation to express I in terms of D.
d. Use the answer to part (c) to show that if two sounds of intensity
e. Fill in the blank: If one sound registers 1 decibel more than another, then it is _____ times as intense.
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