Two waves, each of which has an amplitude of A, cross paths. At the point where they cross, the peak of one wave meets the trough of another wave. What is the resulting amplitude at the point where the waves cross?

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The Praxis General Science: Content Knowledge (5435) exam is a test required by many states for credential candidates planning to teach science at a high school level. It is a single, computer-delivered test that includes questions from five content domains.

The content categories are Scientific Methodology, Techniques, and History; Physical Science; Life Science; Earth and Space Science; and Science, Technology, and Society.


Two waves, each of which has an amplitude of A, cross paths. At the point where they cross, the peak of one wave meets the trough of another wave. What is the resulting amplitude at the point where the waves cross?