A sound of 20 dB intensity is twice as loud as one of 10 dB.
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Q10: Waves that move through air are transverse.
Q11: If v =
Q12: Reflected sound waves that are heard within
Q13: The frequency is the time required for
Q14: The time that is required for a
Q16: In resonance the amplitude of a vibrating
Q17: Sound waves in air
A)are longitudinal waves.
B)are produced
Q18: The restoring force of a spring is
Q19: Transverse mechanical waves can pass through
A)solids.
B)liquids.
C)gases.
D)All of
Q20: Piano tuners listen to the beat frequency
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