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# Problem_Set_3.pdf

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School
McMaster University
Department
Psychology
Course
PSYCH 3A03
Professor
Paul Faure
Semester
Fall

Description
Psych 3A03 27 September 2013 McMaster University Paul A. Faure Instructions and Tips -1 • Assume the speed of sound in air (c ) is =air0 m⋅s , and the speed of sound in water (c water is = 4⋅c air • A calculator is not necessary to answer these questions. 1. An increase in sound power by a factor of 2 corresponds to how many decibels (dB)? 2. What is the intensity level re: 10 -12W/m of a sound whose absolute intensity is 10 W/m ? -6 2 -12 2 -6 2 3. What is the intensity level re: 10 W/m of a sound whose absolute intensity is 2×10 W/m ? 4. 20 dB corresponds to what intensity ratio? 5. An increase in sound pressure by 3 dB corresponds to an increase in sound power by _____ decibels? 6. An increase in sound pressure by a factor of 2 corresponds to how many decibels? Problem Set #3
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