Waves Practice Problem Set Worksheet Page 15
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ECHANICS
RACTICE
ROBLEM
ETS
18. A piano tuner stretches a steel piano wire with a tension of 800 N. The steel wire is
0.400 m long and has a mass of 3.00 grams.
a. What is the frequency of its fundamental mode of vibration?
Answer: 408 Hz
b. What is the number of the highest harmonic that could be heard by a person
who is capable of hearing frequencies up to 10,000 Hz?
th
Answer: 24
harmonic
Gamzon & Gregorian-Michaelsen
6/7/16
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