Unit 3 week 3 Video Lab Speed of Sound_students _New

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Speed of sound experiment using standing waves. Unit 3 week 3 Video Lab Speed of Sound Please watch the following: https://youtu.be/CM5IFM0N1bE In the video the instructor will use properties of sound wave to determine the speed of sound. The is done by using the properties of wave 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.(1) In this experience the length of the column is controlled by water in contained in the tube. The length is adjusted to allow standing waves to occur for different harmonics of the fundamental frequency. (1)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. Be sure to provide units with all numbers. You can indicate the units in the heading of each column or you can add it to each number in the table. Note that n has no unit. f Frequency (Hz) n L ( meter ) λ = 4 L n (meter) v = ( 4 L n ) f ( meter sec ) T = 1 f (sec) 1000 1 1000 3 1000 5 512 1 512 3 256 1 Average velocity V = List possible error sources 1meter = 100cm. 1cm = 0.01 meter. For example: 7cm=7x0.01= 0.07meter 33 cm = 0.33 meter Abbreviation: cm is centimeter

Speed of sound experiment using standing waves. m is meter

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