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chillywilly4242 chillywilly4242
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6 years ago
Sound waves with a single frequency are known as
 
  a. pure tones, which are rare in nature.
 b. pure tones, which are common in nature.
 c. complex tones, which are rare in nature.
 d. noise, which is common in nature.
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haleyhaley
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6 years ago
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