102. •Biology The intensity of a certain sound at your eardrum is 0.003 W/m². (a) Calculate the rate at which sound energy hits your eardrum. Assume that the area of your eardrum is about 55 mm2. (b) What power output is required from a point source that is 2 m away in order to create that intensity?

102. •Biology The intensity of a certain sound at your eardrum is 0.003 W/m². (a) Calculate the rate at which sound energy hits your eardrum. Assume that the area of your eardrum is about 55 mm2. (b) What power output is required from a point source that is 2 m away in order to create that intensity?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.

Question

102. •Biology The intensity of a certain sound at your
eardrum is 0.003 W/m?. (a) Calculate the rate at which
sound encrgy hits your eardrum. Assume that the area of
your eardrum is about 55 mm?. (b) What power output
is required from a point source that is 2 m away in order
to create that intensity?

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