Answer:
f3 = 102 Hz
Explanation:
To find the frequency of the sound produced by the pipe you use the following formula:
[tex]f_n=\frac{nv_s}{4L}[/tex]
n: number of the harmonic = 3
vs: speed of sound = 340 m/s
L: length of the pipe = 2.5 m
You replace the values of n, L and vs in order to calculate the frequency:
[tex]f_{3}=\frac{(3)(340m/s)}{4(2.5m)}=102\ Hz[/tex]
hence, the frequency of the third overtone is 102 Hz
