Question
____ occurs when two waves are not quite perfectly in or out of phase with each other.
Answer
Partially constructive / destructive interference occurs when two waves are not quite perfectly in or out of phase with each other.
The displacement of the resultant wave is equal to the sum of the displacements of the two interfering waves
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____ are physical quantities that have both magnitude and direction .
Vectors are physical quantities that have ____ .
____ are quantities that have only a magnitude .
Scalars are quantities that have ____.
For vector addition , use the ____.
For vector ____, use the tip-to-tail method, or you can break the vector into its component parts and use the Pythagorean Theorem.