Transcript Quiz 2014.10.29

Two pulses of exactly the same size and shape are traveling
toward each other along a stretched rope. They differ only in
that one is upright while the other is inverted. How will the rope
appear at the instant they are superimposed?
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A. There will be a double
wave at the point of
superposition.
B. They will not interact.
C. There will appear to be
no wave at all.
D. This situation cannot
occur!
Two pulses of exactly the same size and shape are traveling
toward each other along a stretched rope. They differ only in
that one is upright while the other is inverted. How will the rope
appear after they have interacted?
A.
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Each pulse continues as
though they never interacted.
B. Each pulse stops and travels
back the direction it came
from.
C. There waves have canceled
each other out, so the rope is
straight again.
D. The pulses invert and
continue traveling in the
direction they were originally
traveling in.
Two pulses of exactly the same size and shape are traveling
toward each other along a stretched rope. How will the rope
appear at the instant they are superimposed?
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A. There will be single
wave of twice the height
of the single waves.
B. They will not interact.
C. There will appear to be
no wave at all.
D. This situation cannot
occur!
On a string of length L fixed at both
ends, it is possible to have a standing
wave with wavelength greater than L.
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A. Well yes, of course it
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B. False, this is crazy!
C. It’s a trap!
On a string of length L fixed at both
ends, it is possible to have a standing
wave with any wavelength less than 2L.
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A. Well yes, of course it
is possible.
B. False, obviously.
C. It’s a trap (again)!
On a string of length L fixed at both
ends, it is possible to have a standing
wave with any fundamental frequency
(within reason).
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It
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A. Well yes, of course it
is possible.
B. False, obviously.
C. It’s a trap (again)!
For a musical instrument which uses longitudinal standing waves
in vibrating air columns to produce tones, having the end open
makes the end a:
A. Node
B. Antinode
C. It depends
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