The intensity of sound, D, measured in decibels (dB) is given by the formula Where I is
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Where I is the power of the sound in watts per square centimeter (W/cm2) and 10-16 W/cm2 is the power of sound just below the threshold of hearing.
a. Find the number of decibels of a 10 -13 W/cm2 whisper.
b. Find the number of decibels in a normal conversation of 3.16 · 10 -10 W/cm2.
c. Find the power of the sound (in W/cm2) experienced by the orchestra members seated in front of the brass section, measured at 107 dB.
d. How many times more powerful is a sound of 47 dB than a sound of 42 dB?
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a b c Approximately 501 10 6 Wcm 2 I 10 1071...View the full answer
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Discovering Advanced Algebra An Investigative Approach
ISBN: 978-1559539845
1st edition
Authors: Jerald Murdock, Ellen Kamischke, Eric Kamischke
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