If two waves have the same frequency and the same amplitude, but opposite phase, the composite wave is ___

If two waves have the same frequency and the same amplitude, but opposite
phase, the composite wave is:

A. Twice the amplitude of either wave alone.
B. Half the amplitude of either wave alone.
C. A complex waveform, but with the same frequency as the originals.
D. Zero.

Show Answer

Answer: D

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