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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Definitions:

Coupon

The interest rate stated on a bond when issued, which represents the actual amount of interest paid to bondholders.

Maturity Date

The specified date on which the principal amount of a loan, bond, or other financial instrument is to be repaid.

Coupon

The annual interest rate paid on a bond, expressed as a percentage of the face value or the periodic interest payment made by bond issuers to its bondholders.

Market Rate

The prevailing rate of interest or return available on investments, often referred to in the context of loans or savings.