A Barking Dog Delivers About 1

question 14

Multiple Choice

A barking dog delivers about 1.0 mW of power,which is assumed to be uniformly distributed in all directions.What is the intensity level in decibels at a distance 5.00 m from the dog? The threshold of human hearing is 1.0 × 10^-12 W/m².

• A)61 dB
• B)63 dB
• C)65 dB
• D)68 dB

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