Factors affecting sound intensity

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Homework Help Overview

The discussion revolves around the factors affecting sound intensity, specifically focusing on amplitude, frequency, and distance from the source. Participants are exploring how these elements relate to the intensity of sound and the implications of the inverse square law.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the relationship between amplitude, frequency, and intensity, questioning how distance from the sound source affects intensity. There is an exploration of whether intensity can be considered directly proportional to amplitude and frequency, while also considering the inverse relationship with distance.

Discussion Status

The discussion is active with participants questioning the direct and inverse relationships between sound intensity, amplitude, frequency, and distance. Some guidance has been offered regarding the inverse square law, but there is no explicit consensus on the interpretations of these relationships.

Contextual Notes

Participants are navigating assumptions about the relationships between sound intensity and its affecting factors, particularly in the context of homework constraints that may limit the depth of exploration.

somecelxis
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Homework Statement



the factor affecting sound intensity is amplitude and frequency . why not also the distance from the source (r) ,

in my opinion, intensity = power/area , so the intensity = power/ 4 pi r ^2 ... so I is inversely proportional to r^2 ...

Homework Equations





The Attempt at a Solution

 
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somecelxis said:
the factor affecting sound intensity is amplitude and frequency . why not also the distance from the source (r) ,
The amplitude and intensity are related. So as distance from the source increases, both amplitude and intensity drop.
 
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Doc Al said:
The amplitude and intensity are related. So as distance from the source increases, both amplitude and intensity drop.

do you mean the intensity and 'distence from the source ' is not directly related , so i can't say that Intensuty is directly proportional to 1/'distence from the source' ?
 
somecelxis said:
do you mean the intensity and 'distence from the source ' is not directly related , so i can't say that Intensuty is directly proportional to 1/'distence from the source' ?
For a point source, the intensity of the sound is inversely proportional to the square of the distance. See: Inverse Square Law for Sound
 
Doc Al said:
For a point source, the intensity of the sound is inversely proportional to the square of the distance. See: Inverse Square Law for Sound

the link also gives the intensity of the sound is inversely proportional to the square of the distance. So why can't i say intensity of the sound is inversely proportional to the square of the distance? but i can only say the factor affecting sound intensity is amplitude and frequency which means Intensity is directly proportional to amplitude square and frequncy square
 
Doc Al said:
The amplitude and intensity are related. So as distance from the source increases, both amplitude and intensity drop.

or can I say in this way? as the distance from the source incraeses , the amplitude of particle at a partcular point decreases . the decreases in the amplitude causes the intensity to drop? so the Intensity is dependent on amplitude square. beacuse intensity has a 'direct 'reatioship between amplitude.
 

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