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[answered] A sinusoidal wave is traveling on a string with speed 37.4


A sinusoidal wave is traveling on a string with speed 37.4 cm/s. The displacement of the particles of the string atx= 10 cm is found to vary with time according to the equation

y= (8.2 cm) sin[1.9 - (7.1 s-1)t].

The linear density of the string is 4.2 g/cm. What are(a)the frequency and(b)the wavelength of the wave? If the wave equation is of the form

y(x,t)=ymsin(kx - ?t),

what are(c)?ym,(d)?k, and(e)??, and(f)the correct choice of sign in front of??(g)What is the tension in the string?

**I have figured out all of the answers except for (d) and (g)

 


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