0.18 Hz 0.36 Hz 2.8 Hz 9.0 Hz
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What is the frequency of ocean waves that have a speed of 18 m/s and a wavelength of 50 m?
Possibilities:
- 0.18 Hz
- 0.36 Hz
- 2.8 Hz
- 9.0 Hz

0.36 Hz