Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
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Chapter 10, Problem 52TAS
For years, marine scientists were mystified by sound waves detected by underwater microphones in the Pacific Ocean. These so-called T waves were among the purest sounds in nature. Eventually the researchers traced the source to underwater volcanoes whose rising columns of bubbles resonated like organ pipes. A typical T wave has a frequency of 7 Hz. Knowing that the speed of sound in seawater is 1530 m/s, show that the wavelength of a T wave is 219 m.
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For years, marine scientists were mystified by sound waves detected by underwater microphones in the Pacific Ocean. These so-called T-waves were among the purest sounds in nature. Eventually they traced the source to underwater volcanoes, whose rising columns of bubbles resonated like organ pipes. What is the wavelength of a typical T-wave whose frequency is 7 Hz? (The speed of sound in seawater is 1530 m/s.)
the human ear tends to be most sensitive to sound frequencies of 3 khz. the sound intensity at this frequency is usually measured as 3x10-13 w/m2. how much energy is transported by this type of sound wave to the eardrum (surface area of about 50mm2 ) in 200ms
You hear a sound of (4.0x10^1) decibels. What is the intensity? Give your answer in microwatts/m2 to 2 sf. Assume the threshold of human hearing is 1.0×10-12 W/m2. Use two significant figures for your answer.
Note: 1 μW = 1×10-6 W
Chapter 10 Solutions
Conceptual Physical Science (6th Edition)
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