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caused when two waves line up with one another, resulting in one wave with a larger amplitude than either of the original waves
caused when the crest of one wave lines up with the trough of the other, resulting in the amplitude being smaller than that of the original waves
process by which two waves meet and occupy the same space at the same time, forming a new wave with different properties
Law of Inertia
any object in motion will stay in motion and any object at rest will stay at rest until it is acted on by an unbalanced force
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