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. Calculate the Young modulus of aluminum.
, if at 
, it propagates at 331 m/s?
. How many times does the sound energy density have to increase in order for us to detect a change in volume?
and with a power of 
. The speaker has a spherical radiation pattern, which means it emits sounds in all directions equally. What is the closest we can go to the speaker without hurting our hearing?
.
. Assume the sound propagates in all directions. What is the maximum distance at which the sound can be heard? Note that the standard reference sound intensity (
) is given as 
.
. The efficiency of converting electrical energy into acoustic energy is 6 %. The speaker emits hemispherical sound waves towards the listeners. What sound intensity level will be heard at a distance of 
from the speakers?
.
and the speed of sound in air is 
.
passes into a room through a window with a surface area of 
. What is the power of the sound that passes into the room?
. By how many 
does the volume increase if the amplitude of the air oscillation doubles?
for the amplitude as a function of time.
and 
.
.
for the given sound signal.
