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MMLU / Sound waves moving at 350 m/s diffract out of a speaker enclosure with an…

Problem

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question

Sound waves moving at 350 m/s diffract out of a speaker enclosure with an opening that is a long rectangular slit 0.14 m across. At about what frequency will the sound first disappear at an angle of 45q from the normal to the speaker face?

choices

  1. 500 Hz
  2. 1,750 Hz
  3. 2,750 Hz
  4. 3,500 Hz

subject

college_physics

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Source and history

Official source

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