1. We know that a speaker that is 3m away from us is playing music at an intensity of 0.89W/m2What is the power of this speaker?2. Another speaker is playing at an intensity of 1.2W/m2 and a power of 2W. How far away isthis speaker from us?

Answered: 1. We know that a speaker that is 3m…

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter14: Sound

Section: Chapter Questions

Problem 20P: A family ice show is held at an enclosed arena. The skaters perform to music playing at a level of...

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A commuter train passes a passenger platform at a constant speed of 40.0 m/s. The train horn is sounded at its characteristic frequency of 320. Hz. (a) What overall change in frequency is detected by a person on the platform as the train moves from approaching to receding? (b) What wavelength is detected by a person on the platform as the train approaches?
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1. We know that a speaker that is 3m away from us is playing music at an intensity of 0.89W/m2 What is the power of this speaker? 2. Another speaker is playing at an intensity of 1.2W/m2 and a power of 2W. How far away is this speaker from us?