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A Vibrating Tuning Fork Is Held Above a Tube Filled Δ\Delta

Question 77

Multiple Choice

A vibrating tuning fork is held above a tube filled with water.The first two resonances occur when the water level is lowered by 14.2 cm and 44.2 cm from the top of the tube.If there is a small end correction that adds a small extra length Δ\Delta L? to the effective length of the air column,calculate the frequency of the tuning fork.Assume the speed of sound to be 330 m/s.


A) 560 Hz
B) 581 Hz
C) 550 Hz
D) 1100 Hz
E) 1120 Hz

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