East Los Angeles College Speed of Sound in Air Lab Summary

215/23.
Phwani Desai.
NAME ______________________________________________
Date _____________________
Table 1: Determination of the wavelength of sound waves
For this Simulation Exercise we will use room temperature (20 oC) for calculating the speed of
sound.
A
Tuning fork
frequency (f)
in Hz
B
First Highest
Node L1 (cm)
C
Second Lower
Node L2 (cm)
D
??2 = (L2 1)
(cm)
E
Wavelength ?
(cm)
440
19
57
3876
512
15
48
33
660
12
38
26
52
Measured
wavelength
(?) in cm
(from col. E,
Table 1)
Wavelength
(?) in m =
?/100
Experimental value of
speed of sound (vT) =
? x f in air (m/s)
Average (vT) in air
(m/s)
76
0.76
334.4
Table 2.
Fork
frequency (Hz)
(from col. A,
Table 1)
and
512
66
0.66337.9
66
338.5.
66052.0.52343.2
343.2
Calculated vT at assumed room temperature (20oC) ______________
Now calculate the percent error which is principal way of determining how close your answer
is to the expected answer.
%?????????? = |
(???????????????? ???? ) ? (???????????????????? ???? )
| x 100%
(???????????????????? ???? )
1.36%.
Percent error between measured and calculated vT _______________
V. Shields Ph.D. ATTC – 2021
Lab #5 Title alancing Torques and Equilibrium
PH07
John Alverez
February 17, 2021
SUMMARY
(What you did and what you learned from these series of exercises. You should include your
understanding of how you used the equations and formulas and your understanding of them.
Also include where you might see these concepts applied outside of the classroom or in your
everyday life.)

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