The explanation for all types of refraction involves a change in
A) frequency.
B) period.
C) speed.
D) all of the above
E) none of the above
Correct Answer:
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Q13: Sound waves cannot travel in
A)air.
B)water.
C)steel.
D)a vacuum.
Q57: Sound travels faster when the air is
A)warm.
B)cold.
C)neither
Q58: Compressions and rarefactions of sound waves normally
Q59: Infrasonic sound waves have relatively
A)low frequencies.
B)long wavelengths.
C)both
Q61: Some singers are able to shatter a
Q63: When sound travels faster higher in the
Q64: The natural frequency of an object depends
Q65: A bass fiddle is louder than a
Q66: Troops break step when marching across a
Q67: "Sympathetic vibrations" refers to
A)beats.
B)interference.
C)pitch.
D)resonance.
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