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  1. B

    physics guitar string/ wave speed problem?

    If the fundamental on a 60 cm guitar string is 320 Hz, what is the wave speed on the string?
  2. B

    sound intensity problem, physics?

    What is the sound intensity level in decibels for a sound wave whose intensity is 10 times that of the threshold of hearing?
  3. B

    Physics frequency problem..... A train traveling at 30 m/s emits sound from

    a 262 Hz whistle? A train traveling at 30 m/s emits sound from a 262 Hz whistle. What frequency is heard by a passenger on another train approaching the first train at 18 m/s?
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