Calculating Frequency of a Transverse Wave on a String

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To calculate the frequency of a transverse wave on a string, first determine the wavelength by recognizing that two cycles fit in a 3.0m section, leading to a wavelength of 1.5m. With the wave speed given as 20 m/s, the frequency can be found using the formula frequency = speed/wavelength. Substituting the values, frequency equals 20 m/s divided by 1.5m, resulting in approximately 13.33 Hz. This method effectively breaks down the problem into manageable steps for solving wave frequency.
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Homework Statement



A periodic transverse wave is established on a string such that there are exactly two cycles traveling along a 3.0m section of the string. The crests move at 20 m/s. What is the frequency of the wave?

Homework Equations



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The Attempt at a Solution



Dont know how to do it.
 
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Let's take the problem apart a bit. for starters if there are two cycles in a 3.0m section that's essentially saying that 2*wavelength = 3.0m, right?

Now, how do we find frequency from wavelength?
 

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