The Car in the Drawing Is Moving to the Left

question 9

Multiple Choice

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.
-How far has the initial compression traveled when the second compression is emitted?

• A)0.77 m
• B)1.56 m
• C)7.7 m
• D)15.5 m
• E)35 m