Physics

How many times larger is the intensity of a sound if you move from 20 m away from it to a distance of 2m?
I think I'm supposed to use the ratio (r1/r2)^2, but I don't know which is which; I don't even know if that's the correct formula.

  1. 👍 0
  2. 👎 0
  3. 👁 66
asked by Ziyi
  1. you are moving it a distance of ten times, so intensity increases 100 times. Isn't that 10 db?

  2. I think so, so I divide the current distance by the new one and square, right? because that's what I'm getting from the equation, so, I think I get it, thank you! :)

    1. 👍 0
    2. 👎 0
    posted by Ziyi

Respond to this Question

First Name

Your Response

Similar Questions

  1. LOGS

    The decibel level of a sound is given by dB=10log(EE0), where E0=10−12wattsm2 and E is the intensity of the sound. (a) Find the intensity of a 80-decibel sound. E= watts per square meter. (b) How many times more intense is the

    asked by Sarah on February 21, 2016
  2. Algebra

    Sound intensity is inversely proportional to the square of the distance from the sound source; that is I= k/(r)^2, where I is the intensity, r is the distance from the sound source, and k is a constant. Suppose that I am sitting a

    asked by Michelle HELP PLEASE on May 14, 2017
  3. Physics(Please help)

    The intensity (in W/m2) of one sound is 4.83 times as great as the intensity of another sound. Relative to the quieter sound, what is the intensity level â of the louder sound? I am not sure how to start this. Thank you.

    asked by Hannah on June 21, 2012
  4. @Ms.Sue please help!!:(Math

    Sound intensity is inversely proportional to the square of the distance from the sound source; that is I= k/ (r)^(2), where I is the intensity, r is the distance from the sound source, and k is a constant. Suppose that you are

    asked by Helen on April 17, 2017
  5. Math

    You are attending a loud concert. To avoid ear damage, you decide to move father from the stage. Sound intensity is given by the formula I= k/d2, where k is the constant and d is the distance in meters form the listener to the

    asked by Anonymous on September 26, 2012
  6. Grade 11 Math

    Here's the question: You are attending a very loud concert. To avoid permanent ear damage, you decide to move farther from the stage. Sound intensity is given by the formula: I = k/d squared K= constant D = distance from the

    asked by Tim on September 25, 2012
  7. Math

    Formula given: The decibel (dB) scale for measuring loudness, d, is given by the formula d = 10 log base ten(I X 12 to the power of 12) where I is the intensity of sound in watts per square metre. a) Find the number of decibels of

    asked by Donna on February 16, 2014
  8. Algebra 2

    The loudness L of sound in decibels is given by L= 10log (l/lo) where l is the intensity of sound and lo is the intensity of the least audible sound. If lo= 10^-12 w/m^2, about how many times more intense is a 108 decibel sound

    asked by Kristen on February 27, 2019
  9. Grade 12 Math Please help!!

    Please can anyone answer this which I have posted previously? Anyone with knowledge of this area of maths? Thanks in anticipation. :) Formula given: The decibel (dB) scale for measuring loudness, d, is given by the formula d = 10

    asked by Donna on February 17, 2014
  10. PreCalculas

    The psychological sensation of loudness B is measured in decibels and is defined with reference to the intensity, , of a barely audible sound by the following equation. In this equation, I is the intensity of the sound in

    asked by Ryan on November 30, 2015

More Similar Questions