You are trying to overhear a most interesting conversation, but from your distance of 10.0 m , it sounds like only an average whisper of 20.0 dB . So you decide to move closer to give the conversation a sound level of 60.0 dB instead. How close should you come? (equation: β=10log(i/io)) a)You are given information on the intensity level (which is a measure of the sound intensity) at a point and its distance from the sound source. To make use of this information, you will need to determine the relation between sound intensity and distance from the source. Which of the following statements correctly expresses that relation? a) The intensity at any distance r is directly proportional to r. b) The intensity at any distance r is directly proportional to r^2. c) The intensity at any distance r is inversely proportional to r. d) The intensity at any distance r is inversely proportional to r^2. e) The square of the intensity at any distance r is directly proportional to r. f) The square of the intensity at any distance r is inversely proportional to r.
You are trying to overhear a most interesting conversation, but from your distance of 10.0 m , it sounds like only an average whisper of 20.0 dB . So you decide to move closer to give the conversation a sound level of 60.0 dB instead. How close should you come? (equation: β=10log(i/io))
a)You are given information on the intensity level (which is a measure of the sound intensity) at a point and its distance from the sound source. To make use of this information, you will need to determine the relation between sound intensity and distance from the source. Which of the following statements correctly expresses that relation?
a) The intensity at any distance r is directly proportional to r. |
b) The intensity at any distance r is directly proportional to r^2. |
c) The intensity at any distance r is inversely proportional to r. |
d) The intensity at any distance r is inversely proportional to r^2. |
e) The square of the intensity at any distance r is directly proportional to r. |
f) The square of the intensity at any distance r is inversely proportional to r. |
b) The values of intensity at the points of interest are not given explicitly. Instead you are given the values of the intensity level at those points. Consturct a convenient expression for the intensity i that corresponds to an intensity level β beta with respect to a reference intensity io.
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