Question

which feature of a wave can be calculated using the formula below? number of wavelengths / time wavelength speed frequency amplitude

Explanation:

Frequency is defined as the number of wavelengths (or cycles) that pass a given point per unit of time. Wavelength is the distance between two consecutive crests or troughs. Speed of a wave is calculated as \(v = f\lambda\) (where \(v\) is speed, \(f\) is frequency and \(\lambda\) is wavelength). Amplitude is the maximum displacement of a wave from its equilibrium position. Since the formula given is number of wavelengths per time, it matches the definition of frequency.

Answer:

frequency