The car in the drawing is moving to the left at 35 m/s. The car's horn continuously emits a 2.20 × 102 Hz sound. The figure also shows the first two regions of compression of the emitted sound waves. The
speed of sound is 343 m/s.
1. How far has the initial compression traveled when the second compression is emitted?
2. What is the wavelength of the sound in the direction of motion of the car?
3. What is the frequency heard by a stationary observer standing in front of the car?