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Unformatted text preview: calculate the intensity, intensity level, pressure amplitude, and displacement amplitude at distances of 5.0 m and 10.0 m from the speaker. Also calculate the ratio of the amplitude at 5 m to that at 10 m. 3. 14-74. 4. Calculate the Fourier coefficients of the square wave of Fig. 14-23. For coefficients that are zero, explain (by referring to the shape of the square wave) why they must be zero. Compare your results to Fig. 14-24. 5. The phase velocity of deep-water waves is v ph = (gl/2p) 1/2 . Calculate the group velocity of a deep-water wave pulse with predominant wavelength l. Comment on the relationship between the two velocities. 6. 14-35. 7. 14-62....
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- Summer '08
- Physics, group velocity, spherical wave, 3-dimensional wave equation, deep-water wave pulse