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?