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physicslabthat sucks

# physicslabthat sucks - 0.155 m 0.159 m 0.157 m 352.256 ms-1...

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IB Physics           Experimentally Determining the Speed of Sound    Michael Wenstrup  Date: 1/12/2011 Codes: 4.3.5 Hours: 2.5 Evaluating: DPP & CE Discussion: A vibrating tuning fork will be held near to and over the open end of a tube whose other end will be in water. Moving the tube up or down will allow you to change the length of the tube while keeping one end closed. At some definite length (L), the sound of the tuning fork will be significantly louder due to the presence of the standing wave in the air column. Materials: 1. Closed Tube filled to near top with water 2. Data: Frequencies Trial 1 Length Trail 2 Length Trial 3 Length Average Length of Trials Calculated Speed of Sound Accepted value for speed of sound Percent Difference 256 Hz 0.328 m 0.324 m 0.319 m 0.324 m 347. 136 ms -1 345.52 ms -1 0.47 % 320 Hz 0.262 m 0.257 m 0.258 m 0.259 m 350.72 ms -1 345.52 ms -1 1.5 % 384 Hz 0.216 m 0.215 m 0.214 m 0.215 m 353.28 ms -1 345.52 ms -1 2.2 % 480 Hz 0.165 m 0.166 m 0.169 m 0.167 m 349.44 ms -1 345.52 ms -1 1.0 % 512 Hz 0.157 m

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Unformatted text preview: 0.155 m 0.159 m 0.157 m 352.256 ms-1 345.52 ms-1 1.9 % PNHS Physics V = frequency x wavelength Wavelength = 4 x Length + e e = 0.015m x 4 256 Wavelength= 4 x 0.324m + 0.06 m Wavelength = 1.356 m Velocity = 256 x 1.356 Velocity = 347.136 ms-1 Percent Difference: 347.136 – 345.52 / 345.52 x 100 = 0.47% 320 Wavelength= 4 x 0.259m + 0.06 m Wavelength = 1.096 m Velocity = 320 x 1.096 Velocity = 350.72 ms-1 Percent Difference: 350.72 – 345.52 / 345.52 x 100 = 1.5% 384 Wavelength= 4 x 0.215m + 0.06 m Wavelength = 0.920 m Velocity = 384 x 0.920 Velocity = 353.28 ms-1 Percent Difference: 353.28 – 345.52 / 345.52 x 100 = 2.2% 480 Wavelength= 4 x 0.167m + 0.06 m Wavelength = 0.728 Velocity = 480 x 0.728 Velocity = 349.44 ms-1 Percent Difference: 349.44 – 345.52 / 345.52 x 100 = 1.0% 512 Wavelength= 4 x 0.157m + 0.06 m Wavelength = 0.688 m Velocity = 512 x 0.688 Velocity = 352.256 ms-1 Percent Difference: 352.256 – 345.52 / 345.52 x 100 = 1.9%...
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physicslabthat sucks - 0.155 m 0.159 m 0.157 m 352.256 ms-1...

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