Answer:
(a) 33 cm
(b) 12.8 cm
Explanation:
The wavelength of a wave is the horizontal distance from crest to crest, or from trough to trough. The amplitude of a wave is the vertical distance from the centerline to the crest or trough.
(a) The horizontal distance from crest to trough is half the wavelength.
66 cm / 2 = 33 cm
(b) The vertical distance from crest to trough is twice the amplitude.
6.4 cm × 2 = 12.8 cm
