Solve the Problem. -The Level of a Sound in Decibels (Db) Is Determined

question 178

Multiple Choice

Solve the problem.
-The level of a sound in decibels (db) is determined by the formula N = 10 · log(I × 1012) db, where I is the intensity of the sound in watts per square meter. A certain noise has an intensity of 8.49 × 10-4 watts per square
Meter. What is the sound level of this noise? (Round your answer to the nearest decibel.)

• A) 89 db
• B) 206 db
• C) 79 db
• D) 9 db

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