Answers: 1
.
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for the wave in this rope.On the other hand, the distance between either gray dashed line and the black dashed line is the distance between a crest (or a trough) and the equilibrium position. That's the amplitude of this wave.
the vertical distance between a crest and a trough. Hence, for the wave in this question,
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. 
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A wave travels along a stretched horizontal rope. The vertical distance from crest to trough for thi...
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