Sound Wave Lab report PDF

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Sound wave lab report...

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Camryn Mason PHYS206L 9/25/20

Sound Lab Objective: Find the length sound will happen for different frequencies. This will help determine the speed of sound. Theory: The vibrations created by the tuner create different wavelengths when in contact with the water. The water will then create a sound when the water is at the correct height. The combination of the frequencies to the lengths will help determine the speed of sound, 331.5+0.607Tm/s. Equipment:  

Speed of sound simulation laptop

Procedure: 1. Select a frequency and start moving the water level upward till you see the wavelength on the outside ends of the tube. 2. Record the measurement of the depth of the water. 3. Move the water level down more until the wavelength is on the outside ends of the tube. 4. Record the measurement of the depth of the water. 5. Repeat steps 1-4 for the other two frequency options. Data:

Analysis: Finding percentage error1. ((352m/s) - (331.5-0.607Tm/s)) 2. (19.893m/s)/ (331.5-0.607Tm/s) 3. .05989 X 100 4. =5.99%

Discussion: The data in the table show that at 440 Hz the lengths were 20cm and 40cm for the first and second measurements, respectively. The second length minus the first length times 2 equals 80cm which is the wavelength. The wavelength times the frequency give the speed of the sound found in the experiment which is equal to 352m/s. The percentage error from the actual speed of sound is 5.99%. At 512Hz the lengths were 15cm and 50 cm for the first and second measurements, respectively. The second length minus the first length times 2 equals 70cm which is the wavelength. The speed recorded for the frequency 512hz was equal to 359m/s. The percentage error from the actual speed of sound is 8.10%. At 660Hz the lengths were 12cm and 38cm for the first and second measurements, respectively. The second length minus the first length times 2 equals 52cm which is the wavelength. The speed recorded for the frequency 660hz was equal to 343m/s. The percentage error from the actual speed of sound is 3.28%. Summary: The lab was able to properly demonstrate what the value of the speed of sound was. For all three frequencies the percentage error was under 10% off from the actual value of the speed of sound which is 331.5+0.607Tm/s. References:  

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