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Physics

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Apr 3, 2024

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Lab Assignment: Speed of Sound Name: Please watch the following: https://youtu.be/CM5IFM0N1bE In the video the instructor will use properties of sound waves to determine the speed of sound. This is done by using the properties of waves that allow standing waves to form. A known frequency transverse sound wave is projected down a closed column and reaches column end. The sound wave is reflected along the column opposite in direction to that of the incident wave. The two waves combine so that there is no propagation of energy along the wave. The wave displacements are constant and remain fixed in location. This is called a standing wave because the two waves of equal amplitude and wavelength do not appear to be traveling. Standing waves are formed in strings of musical instruments and in the air in an organ pipe, a flute, and other wind instruments. Standing waves can then be produced in a column of proper length. In this experiment the length of the column is controlled by water contained in the tube. The length is adjusted to allow standing waves to occur for different harmonics of the fundamental frequency. Ewen, Dale; Neill Schurter, P. Erik Gundersen. Applied Physics (10th Edition) (Page 425-431). Pearson HE, Inc. Kindle Edition. R eview the video and please complete the table below according to the instructions given there. Frequency (Hz) n L ( m ) 4 L / n v = ( 4 L n ) f T = 1 f 256 1 31cm= 31/100=0.31m 1.24m 317.44m/s 0.0039s 512 1 15cm= 15/100=0.15m 0.6m 307.2m/s 0.0020s 512 3 47cm= 47/100=0.47m 0.627m 321.02m/s 0.0020s 1000 5 41cm= 41/100=0.41m 0.328m 328m/s 0.001s 1000 3 25cm= 25/100=0.25m 0.33m 330m/s 0.001s 1000 1 7cm= 7/100=0.07m 0.28m 280m/s 0.001s Average v = ¿ 305.6m/s List possible error sources The biggest error I think would be human error as everyone’s results probably vary at least a little from one another. After completing the table upload to Canvas.
Lab Assignment: Speed of Sound Upload Instructions: Select the Submit Assignment button to the right. Click Choose File , located in the File Upload box. Navigate to your file location. Once the file is located, select it and then select the Open button. Click Submit Assignment to complete the upload process.
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