ef152-rec-3-3 - EF 152 Physics for Engineers Spring 2009...

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EF 152 – Physics for Engineers Spring, 2009 Recitation 3.3 Waves Task 1. Understanding Waves A traveling wave is described by a displacement function y = A sin( a x – b t), where A = 1 m, a = 3m -1 and b = 2s -1 . 1. Determine the wavelength, the frequency, the maximum amplitude, the period, wave velocity, and the wave number. 2. Plot the displacement vs. time for x = 1.0m, 2.047m, and 3.094m. Plot all three functions on the same graph, and plot for two cycles of oscillation. Hint: should your calculator be in degrees or radians? 3. Plot the displacement vs. x for t =1.0s, 1.785s, and 2.571s. Plot all three functions on the same graph, and plot two wavelengths. 4. Show the wavelength, frequency, maximum amplitude, and the period on the graphs. Time (sec) y (m) x=1m x=2.047m x=3.094m x (m) t=1 t=1.785 t=2.571
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EF 152 – Physics for Engineers Spring, 2009 Task 2. The EF 152 wave Line up some chairs and set up a standing wave. Determine the period, amplitude, velocity, and wave number.
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ef152-rec-3-3 - EF 152 Physics for Engineers Spring 2009...

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