The frequencies of sound that carry farther in air are
A) low.
B) high.
C) ultrasonic.
D) none of the above
Correct Answer:
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Q29: One reason for the higher pitch of
Q30: The wavelengths of sound that carry farther
Q31: The speed of sound in air is
Q32: Reverberation of sound occurs for
A)sound interference.
B)forced vibrations.
C)re-echoed
Q33: Assuming that xenon (atomic number 54)and krypton
Q35: In perceiving its environment, a dolphin makes
Q36: Refraction of sound can occur in
A)air.
B)water.
C)both of
Q37: Reflection of sound can occur in
A)air.
B)water.
C)both of
Q38: To estimate the distance in kilometers of
Q39: A dolphin perceives its environment by the
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