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20 votes
20 votes
PLEASE HELP!!

A set of water waves travels at 20.0 m/s , and 5.0 waves pass you in 4.0 s. What is the wavelengths of the waves?

a. 0.25 m

b. 8.0 m

c. 0.20 m

d. 4.0 m

User Martin McNulty
by
3.0k points

1 Answer

14 votes
14 votes

Answer:

Step-by-step explanation:


\lambda\\ = v/f

^That is the formula we are going to use.

Now, we were given the speed (v), which is 20.

Now we need to find frequency, in order to solve for the wavelength.

Frequency is the amount of waves in a fixed unit of one second, meaning our F value is the value of 5 divided by 4.

5/4 = 1.25

Therefore our F is 1.25

Now lets plug it in


\lambda\\ = v/f


\lambda\\ = 20/1.25


\lambda\\ = 16

Conversion:


\lambda\\ = 8

User Neeraj Agarwal
by
3.0k points