physics

You have a tuning fork of unknown frequency. When your ring it alongside tuning fork with frequency of 360Hz, you hear beats at frequency of 2 Hz. When you ring it alongside tuning fork with known frequency of 355Hz, you hear beats at a frequency of 3Hz. What is the unknown frequency?

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asked by silly
  1. What is 352?

  2. 360Hz + 2Hz= 362Hz
    360Hz - 2Hz = 358Hz

    355 + 3Hz= 358Hz
    355 - 3Hz= 352Hz

    Thus, 358Hz is the answer.

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    posted by Jack

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