So the equation for the frequency heard after bouncing off the wall is just the same as if the wall was a stationary receiver with the approaching emitter? That would give the 2 equations
f1 = f( 1 / (1 + VE/V) receding
and
f2 = f(1 / (1 - VE/V) approaching
Approaching emitters...
[SOLVED] Doppler Shift and Beats
Homework Statement
A car horn sounds a pure tone as the car approaches a wall. A stationary listener behind the car hears an average frequency of 250Hz, which pulsates (beats) at 12 Hz. What is the speed of the car?
The speed of sound is assumed to be 331...
Thank you both, that's exactly what I did. No matter how many times I rewrote the problem, I guess I always made the same mistake. I think because my original diagram was so horrendously out of scale I somehow associated R with being the diameter of the sphere instead of the radius, and it took...
Homework Statement
A uniform solid sphere of mass M and radius R hangs from a string of length R/2. Suppose that the sphere is released from an initial position making an angle of 45 degrees with the vertical. Calculate the angular velocity of the sphere when it swings through the vertical...