1) Bubba has a tuning fork with a frequency of 445 Hz. Assuming the speed of sou
ID: 2104718 • Letter: 1
Question
1) Bubba has a tuning fork with a frequency of 445 Hz. Assuming the speed of sound in his lab is 350. m/s, and his resonance tube has a diameter of 3.70 cm, what length tube is required to find the resonant point of his fork?
5) We want to measure the speed of sound without having water vapor as a possible source of error. Which of the following scenarios would work?
True False Use mercury instead of water, since mercury has a very low vapor pressure.
True False Use a column with a piston that can be moved up and down the column to vary the length of the column.
True False Place dessicant in the tube.
True False Perform the experiment at a higher temperature.
True False Use a fixed length tube with dry air or nitrogen, and a tunable speaker instead of the tuning fork.
6) Helga wants to measure the speed of sound in a similar experiment. However, she wants to show off and use an open-ended pipe instead of a pipe closed at one end. Which of the following approaches might be appropriate?
Sounds good Silly Use a plastic tube that can be bent.
Sounds good Silly Use a fixed length pipe, and move the tuning fork around until it resonates.
Sounds good Silly Insert the tuning fork into the open tube, forcing the tube to resonate.
Sounds good Silly Use two pipes that fit closely together, so the overall length of the pipe can be changed.
Sounds good Silly Produce several tubes of varying lengths, and find the tube that resonates.
7) In your experiment, how does the amplitude of the tuning fork vibration affect the results?
True False Has no effect.
True False Makes the resonant position too high low, resulting in a calculated speed too low.
True False Makes the speed of sound come out low.
True False Makes the wavelength too low, resulting in a calculated speed too high.
True False Sounds louder or softer, but does not change the calculations.
Explanation / Answer
taking end correction and first note=445= speed/4*(L+.4D) d is diameter
L=0.18m ANs
5)option 5
6)D
7) A
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