True/False -When two waves beat they produce a wave with the average of the two

Question

True/False

-When two waves beat they produce a wave with the average of the two original frequencies

-Destructive interference occurs when the phase difference of two otherwise identical waves is ?, 3?, 5? etc.

-A standing wave is formed by two identical waves traveling in the same direction

-The second harmonic is twice times the frequency of the fundamental. -

-The beating of two sound waves can be heard as the variation in amplitude of their sum at a frequency equal to their difference in frequency

Explanation / Answer

1> True 2> True 3> False, opposite directions 4> False, not always true 5> True

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