Question

1. what is the amplitude and wavelength of the wave shown below?

o amplitude: 15 cm; wavelength: 150 cm
o amplitude: 30 cm; wavelength: 150 cm
o amplitude: 30 cm; wavelength: 200 cm
o amplitude: 150 cm; wavelength: 30 cm

Explanation:

Step1: Recall amplitude definition

Amplitude is the maximum displacement from the equilibrium position. By observing the wave - if we assume the equilibrium is at the mid - height of the wave's range, and if the maximum height from the equilibrium is 15 cm, then the amplitude is 15 cm.

Step2: Recall wavelength definition

Wavelength is the distance between two consecutive identical points on the wave (e.g., two consecutive crests or troughs). By measuring on the ruler shown, the wavelength is 150 cm.

Answer:

A. Amplitude: 15 cm; wavelength: 150 cm