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What is the length of the shortest open-closed tube needed to produce this frequency?

Jeffrey Rodriguez

in Physics

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Melissa Norris on October 31, 2018

The entire issue is;The lowest frequency in the audible range of 20Hz.What is the length of the shortest open-closed tube needed to produce this frequency?The fundamental frequency of resonance of a tube open at one end is given by the following formula:Where v_s is the speed of sound in air, and L is the length of the tube.The speed of sound at 20 degrees Celsius is v_s=343.7 m/s. so that the shorter length is:


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