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The wavelength of a wave is 12 cm and its frequency is 120 Hz. What is its speed?

Respuesta :

Frequency = speed / wavelength
Speed = frequency / wavelength
Speed= 120 / 12
Speed = 10 cm / s

The speed of the wave is 14.4 m/s.

What is speed?

Speed is the rate of change of distance.

To calculate the speed of the wave, we apply the formula below.

Formula:

  • v = λf............. Equation 1

Where:

  • v = speed of the wave
  • λ = wavelength of the wave
  • f = frequency of the wave.

From the question,

Given:

  • λ = 12 cm = 0.12 m
  • f = 120 Hz.

Substitute these values into equation 1

  • v = 0.12(120)
  • v = 14.4 m/s

Hence, the speed of the wave is 14.4 m/s.

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