The tension in a string is 14 N, and its linear density is 0.81 kg/m. A wave on

Question

The tension in a string is 14 N, and its linear density is 0.81 kg/m. A wave on the string travels toward the ?x direction; it has an amplitude of 3.8 cm and a frequency of 13 Hz. (a) What is the speed of the wave? (Give your answer to two significant figures.) (b) What is the wavelength of the wave? (Give your answer to two significant figures.) (c) Write down a mathematical expression (like the following equations) for the wave. y = A sin(2?ft ? 2?x/?) y = A sin(2?ft + 2?x/?) Substitute numbers for the variables A, f, and ?. (Use the following as necessary: x and t. Assume x is in meters and t is in seconds.) y = **** I figured out A and B but for some reason I can not get C.

Explanation / Answer

4.157m/s

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