Awave is traveling at 36 m/s. if its wavelength is 12 m, how many times does a wavelength move across a set point every second?

a.)one time
b.)three times
c.)twelve times
d.)thirty-six times

Basically, what is asked here is the frequency in per second. This could be calculated by dimensional analysis, such that the remaining unit is 1/s.



Thus, the answer is three times. Letter B.

I hope I was able to give a good explanation. Thank you.