# Physics

I need help on this question:

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.

1. 👍
2. 👎
3. 👁
1. i believe that the answer is d

1. 👍
2. 👎
2. That's what I thought.

1. 👍
2. 👎

## Similar Questions

1. ### Physics

The intensity due to a number of indipendent sound sources is the sum of the individual intensities. A) When four quadruplets cry simultaneously, how many decibels greater is the sound intensity level than when a single one cries?

2. ### Physics

This question has me very lost. Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 11 cm apart. The sound intensity decreases as the distance between the speakers is

3. ### physics

The intensity of a certain sound wave is 6 ì W.cm2. if its intensity is raised by 20 decibels, the new intensity (in ìW/cm2) is : a. 60 b. 6.6 c. 6.06 d. 600 E. 12

4. ### physics

what is the sound intensity level in decibels of ultrasound of intensity of 105 w/m2, used to pulverize tissue during surgery

1. ### calculus

The decibel level of a sound is given by the equation D=10log 10 (i/i 0), where "i" is the sound's intensity and "i 0" corresponds to the intensity of the weakest sound that can be detected by the human ear. Approximately how many

2. ### physics

An audio speaker at a concert emits sound uniformly in all directions at a rate of 100 W. (i) Calculate the sound intensity experienced by a listener at a distance of 8 m from the speaker. The listener moves back from the speaker

3. ### health

Which type of exercise increases fat loss? A. High-intensity B. High-duration C. High-duration/low-intensity D. High-intensity/low-duration im stuk on this question and i can't get any information about it inside my head.weird can

4. ### physics

A person standing 1.00 m from a portable speaker hears its sound at an intensity of 7.50  103 W/m2. (a) Find the corresponding decibel level. (b) Find the sound intensity at a distance of 35.0 m, assuming the sound

1. ### physics

A bell is rung at a sound intensity of 70dB . A trumpet is blown at an intensity that is greater by a factor of 10^3. What is the intensity level of the trumpet

2. ### algebra

The level of sound V in decibels with an intensity I can be models by V=10log(I/10^-16) where I is intensity watts per centimeter. Loud music can have an intensity of 10^-5 watts per centimeter. Find the level of sound of loud

3. ### PHYSICS

At 25 m from a sound source, the intensity level is 55 dB. What's the level at distance of 56m? What's the level at distance of 273m?

4. ### Physics

Five people talk simultaneously. If the intensity level is 70 dB when either one speaks alone, what is the intensity level when both speak at once?