The diagrams show the displacement–distance graph for a progressive wave and the displacement–time graph for an individual particle affected by the wave.
Which is correct for this wave?
The amplitude of the wave is 0.30 m0.30\text{ m}0.30 m.
The wave speed is 20 m s−120\text{ m s}^{-1}20 m s−1.
The wavelength of the wave is 4.0 m4.0\text{ m}4.0 m.
The frequency of the wave is 0.40 Hz0.40\text{ Hz}0.40 Hz.