The vibration caused by p waves is a volume changes, alternatimg from compression to expansión in the direction that the waves is traveling.
Which one if you want independent variable meaning that means variable (often denoted by x ) whose variation does not depend on that of another.
An object undergoing <span>uniform circular motion </span>is moving with a constant speed. Nonetheless, it is accelerating due to its change in direction. So I'm thinking velocity
Bending occurs when one side of the wave enters the new medium before the other side of the wave. ... The bending occurs because the two sides of the wave are traveling at different speeds.
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