- #1
Jacob87411
- 171
- 1
A Boy is walking away from a wall at a speed of 1m/s in a direction at right angles to the wall. As he walks, he blows a whistle steadily. An observer toward whom the boy is walking hearts 4 beats per second. If the speed of sound is 340 m/s, what is the frequency of the whistle?
My original approach did not come out anywhere near right, so I am just going to ask if this analysis of the situation is right.
The boy is walking toward someone blowing a whistle. So there are two doppler effects? The one caused from the boy walking toward an observer and the sound wave reflecting off the wall, so I would calculate two doppler effects and combine them? And how can I change beat frequency to frequency, if that's possible even.
My original approach did not come out anywhere near right, so I am just going to ask if this analysis of the situation is right.
The boy is walking toward someone blowing a whistle. So there are two doppler effects? The one caused from the boy walking toward an observer and the sound wave reflecting off the wall, so I would calculate two doppler effects and combine them? And how can I change beat frequency to frequency, if that's possible even.