# hw11a - HW#10a Word problems and conceptual problems are...

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HW#10a Word problems and conceptual problems are very important. Page 1 of 3 Word problems and conceptual problems are very important. Webassign do not grade those word problems automatically, but those can be in exams and quizzes. Include those key words highlighted here! Problem 1. A hand holding a rope moves up and down to create a transverse wave on the rope. The hand completes an oscillation in 2 s, and the wave travels along the string at 0.5 m/s. The amplitude of the wave is 0.09 m. a.) Find the frequency at which the crests pass a given point in space. Hz b.) Find the distance between two adjacent crests on the wave. m c.) There is a blue spot drawn onto the rope with a magic marker. Find the distance this spot travels in one period. m d.) If the mass per unit length of the string is 5 ·10 -4 kg/m, what is the tension in the string? N Solution. The equation for a transverse wave on a string is the "harmonic wave function," () 22 ,c o s yxt A x t T π λ ⎛⎞ =− ⎜⎟ ⎝⎠ . (a) We are given the period T, from which we can calculate the frequency f: 11 0.5 Hz 2 s f T == = (b) This is the wavelength ,

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hw11a - HW#10a Word problems and conceptual problems are...

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