Wind gusts create ripples on the ocean with a wavelength of 5.00 cm that travel at 2.00 m/s. What is their frequency?

1. Wave speed, frequency and wavelength are linked by v_w = f x wavelength. 2. Rearranging gives f = v_w / wavelength. 3. Convert the wavelength: 5.00 cm = 0.0500 m. 4. f = 2.00 m/s divided by 0.0500 m = 40.0 Hz. 5. Leaving the wavelength in centimetres gives 0.400 Hz, a hundred times too small. 6. Multiplying speed by wavelength instead of dividing gives 0.100, which is the trap in one option. _Source: OpenStax College Physics (CC BY 4.0), Ch 16 "Oscillatory Motion and Waves", section 16.9 Waves_