Solve the Problem $L = 10 \cdot \log \frac { 1 } { \mathrm { I } _ { 0 } }$

question 92

Multiple Choice

Solve the problem.
-Use the formula $L = 10 \cdot \log \frac { 1 } { \mathrm { I } _ { 0 } }$ , where the loudness of a sound in decibels is determined by $\mathrm { I }$ , the number of watts per square meter produced by the sound wave, and
I $0 = 10 ^ { - 12 }$ watts per square meter. A certain noise produces $9.92 \times 10 ^ { - 5 }$ watts per square meter of power. What is the decibel level of this noise?

• A) \(184 \mathrm { db }\)
• B) \(70 \mathrm { db }\)
• C) \(8 \mathrm { db }\)
• D) \(80 \mathrm { db }\)

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