Water waves in the sea are observed to have a wavelength of 300 m and a frequency of 0.07 Hz. The speed of these wave isA 0.00021 m/s B 21 m/s C 2.1 m/s D 210 m/s
Question
Water waves in the sea are observed to have a wavelength of 300 m and a frequency of 0.07 Hz. The speed of these wave isA 0.00021 m/s B 21 m/s C 2.1 m/s D 210 m/s
Solution
The speed of a wave can be calculated using the formula:
Speed = Wavelength x Frequency
Given in the problem, the wavelength (λ) is 300 m and the frequency (f) is 0.07 Hz.
Substituting these values into the formula gives:
Speed = 300 m x 0.07 Hz = 21 m/s
So, the speed of the wave is 21 m/s. Therefore, the correct answer is B. 21 m/s.
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