A pipe closed at one end is 1.0m long. The air in the pipe is set into vibration and a fundamental note of frequency 85Hz is produced. Calculate the velocit...
Question 1 Rapport
A pipe closed at one end is 1.0m long. The air in the pipe is set into vibration and a fundamental note of frequency 85Hz is produced. Calculate the velocity of sound in the air. (Neglect end correction).
Détails de la réponse
The fundamental frequency of a closed pipe is given by:
f = v/4L
where f is the frequency, v is the velocity of sound and L is the length of the pipe.
Rearranging this equation to solve for v, we get:
v = 4Lf
Substituting the values given in the question, we get:
v = 4 x 1.0m x 85Hz
v = 340.0ms^-1
Therefore, the velocity of sound in air is 340.0ms^-1.
Answer: 340.0ms^-1.
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