Concept explainers
Hearing Loss from MP3 Players Recent research has shown that the use of earbud-style headphones packaged with MP3 players can cause permanent hearing loss.
(a) The intensity of the sound from the speakers of a certain MP3 player (without earbuds) is measured at
(b) If earbuds are used with the MP3 player in part (a), the decibel level is 95 dB. Find the intensity.
(c) Find the ratio of the intensity of the sound from the MP3 player with earbuds to that of the sound without earbuds.
Want to see the full answer?
Check out a sample textbook solutionChapter 4 Solutions
Algebra and Trigonometry (MindTap Course List)
- What is the decibel level of one of the new quiet dishwashers with intensity 107 watts per square inch?arrow_forwardIn 1906, San Francisco experienced an intense earthquake with a magnitude of 7.8 on the Richter scale. In 1989, the Loma Prieta earthquake also affected the San Francisco area, and measured 6.9 on the Richter scale. Compare the intensities of the two earthquakes.arrow_forwardThe resistance of a copper wire carrying an electrical current is directly proportional to its length and inversely proportional to its cross-sectional area. A copper wire with a diameter of 0.0126inch has a resistance of 64.9ohms per thousand feet. What length of 0.0201-inch-diameter copper wire will produce a resistance of 33.5ohms?arrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage
- Algebra for College StudentsAlgebraISBN:9781285195780Author:Jerome E. Kaufmann, Karen L. SchwittersPublisher:Cengage LearningAlgebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning