The sound intensity level at a seat that is a distance of 2.00 meters from a rock concert stage is 120 dB. (a) Calculate the Intensity, I1 , of the sound in W/m2 at that position. (b) Calculate the sound level in dB at a seat that is 32 meters from the stage, given that the intensity decreases with the square of the distance from the source.

Explanation:

= Intensity of sound at 2 m away

Sound level = 120 dB

= 2 m

= 32 m

= Threshold of sound =

Sound level is given by

The intensity of sound at 2 m away is

The intensity of the sound 32 m away is

c. newton's third law of motion

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas