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Ch 16: Traveling Waves
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All textbooksKnight Calc 5th EditionCh 16: Traveling WavesProblem 17

Chapter 16, Problem 17

FIGURE EX17.6 shows a standing wave oscillating at 100 Hz on a string. What is the wave speed?

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Welcome back, everyone. We are making observations about the opposing waves with equal frequency and amplitude. Now, we are told that they oscillate with a frequency of 250 Hertz and we are tasked with finding the speed at which the wave travels along the string. Well, how are we gonna do this? Well, we know that the speed is just equal to the frequency times our lambda and LAMBDA is calculated by one third of our entire length. Now, as you can see, it is 72 centimeters or 720.72 m. And what this gives us is a lambda of 0.24 m. Now, the speed at which the wave travels will be 250 Hertz times 0.24, giving us a final answer of 60 m per second corresponding to our answer. Choice of B Thank you all so much for watching. I hope this video helped. We will see you all in the next one.
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