B. Amplitude: 30cm; wavelength: 110cm
Explanation:
A wave is characterized by the following properties:
- The amplitude of a wave is the maximum displacement of a wave, measured with respect to the equilibrium position of the wave
- The wavelength of a wave is the distance between two consecutive crests of a wave
- The frequency of a wave is the number of complete oscillations of the wave per second
- The period of a wave is the time taken by the wave to make one complete oscillation
In this question we are interested in the amplitude and the wavelength of th wave. We have:
- Amplitude: it is the maximum displacement of the wave - by looking at the y-axis, we see that the maximum displacement of the wave is 30 cm, so this is the amplitude
- Wavelength: we can find it by measuring the distance between two consecutive crests. We have one crest at 30 cm and the following one at 140 cm, therefore the wavelength is
[tex]\lambda = 140 - 30 = 110 cm[/tex]
So the correct answer is
B. Amplitude: 30cm; wavelength: 110cm
Learn more about waves here:
brainly.com/question/5354733
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