Piano tuners listen to the beat frequency between their tuning fork and the wire they are tuning.
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Q15: A sound of 20 dB intensity is
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
Q21: A sound that is perceived as twice
Q22: When the trough of one wave arrives
Q23: You are able to hear sounds from
Q24: A noise level of 65 decibels is
Q25: The lowest frequency possible in a vibrating
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