A wave is traveling at 36 meters per second If its wavelength is 12 m , how many times does a wavelength move across a set point every second?

The frequency is the wave speed divided by its wavelength: 36 meters per second ÷ 12 meters = 3 per second. So three wavelengths pass a set point each second, which is choice B, “three times.”

AI-written and checked against the verified answer.