I\'m not sure what to do to solve this problem? An earthquake can produce a \"se

Question

I'm not sure what to do to solve this problem? An earthquake can produce a "seiche" in a lake, in which thewater sloshes back and forth from end to end with a remarkablylarge amplitude and long period. Consider a seiche produced in arectangular farm pond, as in the cross-sectional view shown below.(The figure is not drawn to scale). Suppose that the pond is9.50 m long and of uniform width anddepth. You measure that a pulse produced at one end reaches theother end in 2.50 s. 1)What is the wave speed? 2)To produce the seiche, several people stand on the bank atone end and paddle together with snow shovels, moving them insimple harmonic motion. What should be the frequency of thismotion?
I'm not sure what to do to solve this problem? An earthquake can produce a "seiche" in a lake, in which thewater sloshes back and forth from end to end with a remarkablylarge amplitude and long period. Consider a seiche produced in arectangular farm pond, as in the cross-sectional view shown below.(The figure is not drawn to scale). Suppose that the pond is9.50 m long and of uniform width anddepth. You measure that a pulse produced at one end reaches theother end in 2.50 s. 1)What is the wave speed? 2)To produce the seiche, several people stand on the bank atone end and paddle together with snow shovels, moving them insimple harmonic motion. What should be the frequency of thismotion?

Explanation / Answer

wave speed , from therelation         V = 9.50 m /2.50 sec assuning a single seiche is lockedon the surface of the lake        wavelength = 9.50 m frequency of the wave               f = V /                  = 0.4 sec-1 .

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