AP Entering The Park
4 Questions
| Total Attempts: 92
Questions and Answers
- 1.As you enter Kennywood Park through the tunnel, you yell at one of your classmates on the other side of the tunnel. How fast did your voice travel if the air temperature is 20 degrees Celsius?
- A.
331 m/s
- B.
434 m/s
- C.
343 m/s
- D.
313 m/s
- 2.What is the fundamental frequency of the tunnel if it is 100 feet long (30.5 meters)? Assume the speed of sound in air is 345 m/s.
- A.
0.862 Hz
- B.
2.83 Hz
- C.
1.72 Hz
- D.
5.66 Hz
- 3.List the second and third harmonics of the tunnel.
- A.
11.3 Hz, 17.0 Hz
- B.
5.66 Hz, 8.49 Hz
- C.
3.44 Hz, 5.16 Hz
- D.
1.72 Hz, 2.59 Hz
- 4.As you are exiting the tunnel, you hear a car blowing its horn (frequency = 800 Hz) as it passes you on the road above you. If the car is traveling 25 m/s, what frequency do you hear as the car approaches you? (Assume the speed of sound to be 343 m/s)
- A.
746 Hz
- B.
800 Hz
- C.
863 Hz
- D.
858 Hz
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