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What
is the period of a wave, if 20 crests pass an observer in 4 seconds?
A.
80 s
B.
.2 s
C.
5 s
D.
4 s
Two waves traveling in the same medium interfere to produce a standing wave.
What is the phase difference between the 2 waves at a node?
A.
0 degrees
B.
90 degrees
C.
180 degrees
D.
360 degrees
As a pulse travels along a rope, the pulse loses energy and its amplitude
A.
Decreases
B.
Increases
C. Remains the same
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