The energy of a ripple on a pond is proportional to the amplitude squared. If the amplitude of the ripple is 0.100 cm at a distance from the source of 6.0 meters, what was the amplitude at a distance of 2.0 meters from the source?
A 250-Hz tuning fork is struck. The sound intensity at a 1.00-m-distance from the fork is W/m2.
What is the sound intensity in terms of at a 4.00-m-distance from the fork?
At what distance from fork is the sound intensity W/m2?
The low-frequency speaker of a stereo set has a surface area of and produces 1 W of acoustical power.
What is the intensity at the speaker?
If the speaker projects sound uniformly in all directions, at what distance from the speaker is the intensity 0.1 W/m2?
A microphone receiving a pure sound tone is connected to an oscilloscope, producing a wave on its screen. The sound intensity is originally mW/m2 but is increased until the amplitude shown by the oscilloscope increases by . What is the intensity of the sound after the amplitude increases?
Ten cars in a circle at a boom box competition produce a 120-dB sound intensity level at the center of the circle. What is the average sound intensity level produced there by each stereo, assuming interference effects can be neglected?