The figure below represents a periodic wave plotted on a time scale. Each increm

Question

The figure below represents a periodic wave plotted on a time scale. Each increment on the equilibrium line is 1225 ms. What is the wave's period (in s)? (you don't have to enter units for this problem) t (ms) 6125 What constitutes one entire wave? How many increments is that? Submit Answer Incorrect. Tries 4/5 Previous Tries What is the frequency of the wave in this figure? 245 Hz Recall the relationship between frequency and period Submit Answer Incorrect. Tries 2/5 Previous Tries If the wave in this problem is moving at 39 m/s, what is its wavelength? 238.875 nnm Recall the relationship between wavelength, frequency and speed Submit Answer Incorrect. Tries 1/s Previous Tries

Explanation / Answer

1. Wave Period = Time of one oscillation = Time of 1 Crest and 1 Trough = 1225 x 8 = 9800 ms = 9,8 s

2. One entire wave is combination of one Crest and one Trough or in simple language it is form of 2 loops.

In given graph total incriments = 8

3. Frequency of wave = 1 / Time Period = 1 / 9.8 = 0.102 Hz

4. wave speed = 39 m/s

speed = frequency x wavelength

therefore, wavelength = speed / frequency = 39 / 0.102 = 382,2 m

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