Finding the velocity of sound in a tube.

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SUMMARY

The discussion centers on calculating the velocity of sound in a tube using experimental data from an acoustics lab. The participant utilized a tweeter and a piston to measure the distance "X" between initial and reflected sound pulses, with time "T" calculated using a time/div setting of 0.0005 s/div. The slope derived from the graph was determined to be 1.5 x 10^-4. The participant successfully calculated the velocity of sound and compared it to the accepted value of 340 m/s at 20 degrees Celsius.

PREREQUISITES
  • Understanding of basic acoustics principles
  • Familiarity with graphing techniques and slope calculations
  • Knowledge of sound wave propagation in tubes
  • Experience with time measurement in experimental setups
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  • Research the formula for calculating sound velocity in a medium
  • Learn about the effects of temperature on sound speed
  • Explore advanced graphing techniques for data analysis
  • Investigate the principles of wave reflection and transmission
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Students and researchers in acoustics, physics educators, and anyone conducting experiments related to sound wave propagation in tubes.

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I'm doing an acoustics lab, and I have a tweeter which is making sounds into a tube with a piston in it, i move the piston to different positon, and measure the distance " X ". "X " is the distance between the initial and reflected pulses. I then found time ( T ) by multiplying my "X" by the (Time/Div) which was 0.0005 s/div. I made a graph, which I'm not sure is right either, my y values (Time) range anywhere from 0.0001 s to 0.0036.

I calculated my slope and got 1.5 x 10^-4

Calculate the velocity of sound from the slope and compare your values with the accepted value of 340 m/s at 20 degrees celius. My slope is 1.5 x 10^-4.

Can anyone help me, I'm just not sure which formula to use, because I hardly have any information, any guidance at all would be appriciated. Thanks:)
 
Last edited:
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whoa, never mind i figured it out.
 

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