For a wave on a long string, the following observations are made.
• At t=0, two successive nodes in the displacement–position graph are 12 cm apart.
• At x=0, the displacement–time graph shows that two successive zero crossings in the same direction are 18 ms apart.
(i) Determine the wavelength of the wave.
(ii) Determine the period of the wave.
(iii) Hence calculate the speed of the wave.
a. (i) Wavelength
b. (ii) Period
c. (iii) Speed