A water wave has wavelength and frequency

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

A water wave has wavelength 0.25 m0.25\,\text{m} and frequency 12 Hz12\,\text{Hz}. Its speed is (a) 18.8 m s−118.8\,\text{m\,s}^{-1} (b) 0.021 m s−10.021\,\text{m\,s}^{-1} (c) 3 m s−13\,\text{m\,s}^{-1} (d) 48 m s−148\,\text{m\,s}^{-1}

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