Example: Standing Waves


In this simulation, we see a speaker sending sound waves into tube, into which a microphone is placed. The tube is open at both ends. The grid separation is 10 cm per square. A wave is in resonance inside the tube. We also see an oscilloscope displaying the signal at the microphone. Move the microphone back and forth inside the tube and determine the wavelength of the standing wave.
X [1.4] m
Use the oscilloscope to determine the period of the sound wave.
X [4.08] ms
What, then, is the frequency of the standing wave?
X [245] Hz

How would you use these data to determine the speed of sound in air?


Key: Essay

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