Physic Lab_Speed of Sound

Physic Lab_Speed of Sound - = (abs.(V st. V exp )/ V st )...

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Physic Lab Speed of Sound (Group 7) 1/28/11 Lab Partners: Chi Ming Mak Yile Zou Osma Gomez Kerubin Sulaiman
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Equipment: Electronic thermometer #001400, a resonance tunbe #000260, frequency producer # 000101, frequency reader #000090, a plastic plank, Ocillator #000081 Data: f = frequency of the sound L 1 = the first maximum reading L 2 = the second maximum reading i L 1 (m) L 2 (m) f (Hz) 1 0.0310 0.201 1027 2 0.00700 0.100 1862 3 0.0360 0.197 1108 4 0.117 0.461 518 Analysis: λ = the wavelength of sound T c = room temperature V st. = 331sqrt ( 1+ T c /273 ˚C) = V o + 0.61T c =331m/s^2 + 0.61(23.8˚C)= 345.5m/s^2 L 2 – L 1 = λ/2 2(L 2 – L 1 ) = λ
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V exp / f = λ V exp . = 2 f (L 2 – L 1 ) e % = percentage error between experimental and standard velocity
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Unformatted text preview: = (abs.(V st. V exp )/ V st ) X100% i (m) V exp. (m/s^2) e % 1 0.340 349.2 1.05 2 0.186 346.3 0.230 3 0.322 356.8 3.17 4 0.688 356.4 3.06 Conclusion: In this experiment, we found the speed of sound from the frequency emitting from a resonance tube as our experimental value. Then we calculated the standard value based on the room temperature. As a result, we concluded that the experimental values under different trials were closed to the standard value. Since other groups were doing this lap at the same time, the frequencies emitted from other groups caused the biggest error, which was 3.17 percent ....
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Physic Lab_Speed of Sound - = (abs.(V st. V exp )/ V st )...

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