Physics
posted by Amber .
1. What is the intensity of a sound at the pain level of 120 dB?
2. What is the intensity level of a sound whose intensity is 2.0 x 10^6 W/m^2?

Use the equation you will find at
http://members.optusnet.com.au/scottsoftc/Chapter01/Chapter1f.htm
as well as your textbook, if you are using one.
0 dB corresponds to 10^12 W/m^2 of sound intensity. Each 10 dB above that is a factor of 10. 
idk
Respond to this Question
Similar Questions

Physics
This time I have two questions: #1.A recording engineer works in a soundproofed room that is 49.7 dB quieter than the outside. If the sound intensity in the room is 2.66 x 1010 W/m2, what is the intensity outside? 
physics  sound level
The source of a sound wave has a power of 2.50 µW. Assume it is a point source. (a) What is the intensity 6.70 m away? 
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? 
physics
An electronic point source emits sound isotropically at a frequency of 3000 Hz and a power of 34 watts. A small microphone has an area of 0.75 cm2 and is located 158 meters from the point source. a) What is the sound intensity at the … 
math
A loud speaker at a rock concert generates 102 W/m2 at 20m with a frequency of 1 kHz. Assume that the speaker spreads its intensity uniformly in all direction. (a) What is the sound level ( = ? 
physics
1.) The average sound intensity inside a busy neighborhood restaurant is 3.*10^5 W/M^2. How much energy goes into each ear (area = 2.1 * 10^2 m^2) during a one hour meal? 
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? 
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 … 
physics
the intensity level of a sound A is5dB greater than that of sound B and 3dB less than that of C. determine the ratio (Ic/Ib) of the intensity of sound C to that of sound B. 
@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 sitting …