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MotionLab
How many wave cycles pass per second, from wave speed and the distance between peaks.
Frequency and wavelength are inversely related at a fixed wave speed — shorter wavelength always means higher frequency, and vice versa, which is why high-pitched sounds have short wavelengths and low-pitched sounds have long ones.
Frequency can also be calculated as the inverse of the period (time for one full cycle) — both approaches describe the same underlying oscillation, just from different starting measurements.
Frequency (Hz)
439.744
f = v / λ
What you entered
f = v ÷ λ
343 ÷ 0.78= 439.7436 HzResult
Frequency (Hz): 439.744
A 0.78m wave traveling at 343 m/s has a frequency of 439.744 Hz.