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Two identical waves arrive crest on crest, so the amplitude of the result is:
ADamped
BDoubled
CDeleted
DDivided
Answer & Solution
Correct answer: B. Doubled
1. The disturbances point in the same direction at every point.
2. They therefore add together fully.
3. The amplitude doubles.
_Source: OpenStax College Physics 2e, Chapter 16, Oscillatory Motion and Waves._
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