Concept explainers
The loudness level of a sound, D, in decibels, is given by the formula
where I is the intensity of the sound, in watts per
Decibel levels range from 0, a barely audible sound, to 160, a sound resulting in a ruptured eardrum. Use the formula to solve Exercises 91 -92.
What is the decibel level of a normal conversation,
?
Want to see the full answer?
Check out a sample textbook solutionChapter 9 Solutions
Pearson eText Intermediate Algebra for College Students -- Instant Access (Pearson+)
- Rewrite e12=m as an equivalent logarithmicequation.arrow_forwardIn Exercises 79-82, use the following information. The relationship between the number of decibels and the intensity of a sound I (in watts per square meter) is =10logI1012. Find the difference in loudness between a vacuum cleaner with an intensity of 104 watt per square meter and rustling leaves with an intensity of 1011 watt per square meter.arrow_forwardConvert the equation from logarithmic equation to exponential form: 3=log7343arrow_forward
- Can the power property oflogarithms be derivedfrom the power property of exponents using theequation bx=m ?If not, explain why. If so, show thederivation.arrow_forwardGiven a formula for an exponential function, is itpossible to determine whether the function grows ordecays exponentiallyjust by looking at the formula?Explain.arrow_forward
- Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage Learning
- Intermediate AlgebraAlgebraISBN:9781285195728Author:Jerome E. Kaufmann, Karen L. SchwittersPublisher:Cengage LearningAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage