April 25, 2015

Homework Help: physics

Posted by Jon on Sunday, April 6, 2008 at 1:05pm.

1)For incomplete cancellation to occur, opposite pulses must have.

A)equal amplitudes
B)different energies
C)equal pulses
D)equal displacements

I think there is a typo on A because my book reads: if the opposite pulses have unequal amplitudes, cancellation is incomplete. So I think A should read unequal amplitudes. It also talks about displacement but I choose A if there is a typo.

2)For the medium to remain undisturbed as two pulses pass the same point, they must have.

A)equal amplitudes
B)opposite amplitudes
C)different amplitudes
D)both A and B

I got C

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