Help!! I only got the wave length correct.--please explain your answer. Thanks!!

Question

Help!! I only got the wave length correct.--please explain your answer. Thanks!!

A sine wave is traveling to the right on a cord. The lighter line in the figure represents the shape of the cord at time t = 0; the darker line represents the shape of the cord at time t = 0.10 s. (Note that the horizontal and vertical scales are different.

What is the amplitude of the wave?cm

(b) What is the wavelength of the wave? 14m

(c) What is the speed of the wave? m/s

(d) What is the frequency of the wave? Hz

(e) What is the period of the wave?

Explanation / Answer

amplitude of the wave=2.5 cm speed of the wave=10 m/s frequency of the wave=71 Hz period of the wave=s

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