Water waves crash against a seawall around the harbour. Eight waves hit the seawall in 5 s. The distance between successive troughs is 9 m. The height of the waveform trough to crest is 1,5 m.
a. How many complete waves are indicated in the sketch?
b. Write down the letters that indicate any TWO points that are: i. in phase ii. out of phase iii. Represent ONE wavelength.
c. Calculate the amplitude of the wave e. Calculate the frequency of the waves.
f. Calculate the velocity of the waves.