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Chapter 10: Q. 208 (page 1035)

In the following exercises, use a logarithmic model to solve.

What is the decibel level of normal conversation with intensity 10-6 watts per square inch?

Short Answer

Expert verified

The decibel level of normal conversation is 60dB.

Step by step solution

01

Step 1. Concept used

The loudness level, D, measured in decibels, of a sound of intensity, I, measured in watts per square inch is

localid="1644991812893" D=10logI10-12

02

Step 2. Substitute the value of I

It is given that the intensity is 10-6watts per square inch. So in the formula D=10logI10-12, substitute 10-6for Iand simplify.

D=10log10-610-12D=10log10-6-(-12)D=10log106D=10路6D=60

So the decibel level for the normal conversation is60 dB.

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