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1. A spectator at a parade receives an 907 Hz tone from an oncoming trumpeter who...

1. A spectator at a parade receives an 907 Hz tone from an oncoming trumpeter who is playing an 877 Hz note. At what speed is the musician approaching if the speed of sound is 345 m/s?

2. If a wind instrument, such as a tuba, has a fundamental frequency of 34.6 Hz, what is its fifth overtone? It is closed at one end and the speed of sound is 331 m/s.

3. A sonar echo returns to a submarine 1 s after being emitted. What is the distance to the object creating the echo? (Assume that the submarine is in sea water, and therefore, vw ? 1537 m/s.)

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