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A trumpet creates a sound intensity level of 9.80 x 10 dB at a distance of 1.10 m. (a) What is the sound intensity of a trumpet at this distance? 0.0063095 v w/m? (b) What is the sound intensity of five trumpets at this distance? 0.031548 v W/m2 (c) Find the sound intensity of five trumpets at the location of the first row of an audience, 9.60 m away, assuming, for simplicity, the sound energy propagates uniformly in all directions. 0.0003423 Your response differs from the correct answer by more than 10%. Double check your calculations. W/m² (d) Calculate the decibel level of the five trumpets in the first row. dB (e) If the trumpets are being played in an outdoor auditorium, how far away, in theory, can their combined sound be heard? m (f) In practice such a sound could not be heard once the listener was 2-3 km away. Why can't the sound be heard at the distance found in part (e)? Hint: In a very quiet room the ambient sound intensity level is about 30 dB.

A trumpet creates a sound intensity level of 9.80 x 10 dB at a distance of 1.10 m. (a) What is the sound intensity of a trumpet at this distance? 0.0063095 v w/m? (b) What is the sound intensity of five trumpets at this distance? 0.031548 v W/m2 (c) Find the sound intensity of five trumpets at the location of the first row of an audience, 9.60 m away, assuming, for simplicity, the sound energy propagates uniformly in all directions. 0.0003423 Your response differs from the correct answer by more than 10%. Double check your calculations. W/m² (d) Calculate the decibel level of the five trumpets in the first row. dB (e) If the trumpets are being played in an outdoor auditorium, how far away, in theory, can their combined sound be heard? m (f) In practice such a sound could not be heard once the listener was 2-3 km away. Why can't the sound be heard at the distance found in part (e)? Hint: In a very quiet room the ambient sound intensity level is about 30 dB.

College Physics
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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A trumpet creates a sound intensity level of 9.80 x 10' dB at a distance of 1.10 m. (a) What is the sound intensity of a trumpet at this distance? 0.0063095 v W/m2 (b) What is the sound intensity of five trumpets at this distance? 0.031548 v W/m2 (c) Find the sound intensity of five trumpets at the location of the first row of an audience, 9.60 m away, assuming, for simplicity, the sound energy propagates uniformly in all directions. 0.0003423 Your response differs from the correct answer by more than 10%. Double check your calculations. W/m2 (d) Calculate the decibel level of the five trumpets in the first row. dB (e) If the trumpets are being played in an outdoor auditorium, how far away, in theory, can their combined sound be heard? (f) In practice such a sound could not be heard once the listener was 2-3 km away. Why can't the sound be heard at the distance found in part (e)? Hint: In a very quiet room the ambient sound intensity level is about 30 dB.
Transcribed Image Text:A trumpet creates a sound intensity level of 9.80 x 10' dB at a distance of 1.10 m. (a) What is the sound intensity of a trumpet at this distance? 0.0063095 v W/m2 (b) What is the sound intensity of five trumpets at this distance? 0.031548 v W/m2 (c) Find the sound intensity of five trumpets at the location of the first row of an audience, 9.60 m away, assuming, for simplicity, the sound energy propagates uniformly in all directions. 0.0003423 Your response differs from the correct answer by more than 10%. Double check your calculations. W/m2 (d) Calculate the decibel level of the five trumpets in the first row. dB (e) If the trumpets are being played in an outdoor auditorium, how far away, in theory, can their combined sound be heard? (f) In practice such a sound could not be heard once the listener was 2-3 km away. Why can't the sound be heard at the distance found in part (e)? Hint: In a very quiet room the ambient sound intensity level is about 30 dB.
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