Question

An omnidirectional point source of sound s is immersed in a freshwater lake. an observer on the shore notes that the sound in transmitted in the air at an angle of 5◦ (referenced to the vertical) at his current location. when he moves 1 m farther from the source, he notes that the angle has increased to 6◦. how far away was the observer from the source at his original location, and how deeply submerged is the source?

Answer 1

The change in observed frequency as an observer moves toward or away from a stationary source of sound is explained by the Doppler effect.

Step-by-step explanation:

The change in observed frequency as an observer moves toward or away from a stationary source of sound is explained by the Doppler effect. The Doppler effect is the change in frequency or pitch of a wave as the source of the wave moves relative to an observer.

When the observer is moving towards the source, the observed frequency is higher than the source frequency. This is because the wavefronts of the sound waves are compressed, resulting in a shorter wavelength and a higher frequency.

When the observer is moving away from the source, the observed frequency is lower than the source frequency. This is because the wavefronts of the sound waves are stretched, resulting in a longer wavelength and a lower frequency.