1. On a long trip that you take to forget for a while about physics, you find yourself driving
directly towards a canyon wall. You’ve previously noticed that your car horn has a
frequency of 440 Hz. You glance at the speedometer and notice you’re moving at 30
What is the beat frequency you experience?
Various Doppler Effect Equations and Beat Frequency
The Attempt at a Solution
I need to calculate the beat frequency for this question, to do that I need both frequencies from the reflection of the wall and the sound I hear from the horn itself.
Is it correct to treat the wall as its own source? Therefore I am traveling towards the source?
What about the second doppler effect? I am struggling to figure it out. It is me traveling towards the source again? That wouldnt make sense as I am traveling to two sources? ahh im stuck.
(How does the frequency change when I am traveling with the source?)