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4 Waves

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Question 5

An ultrasound sensor is fixed at the top of a storage silo. It sends a pulse downwards and detects the echo reflected from the surface of the flour.

The echo is detected 0.032 s after the pulse is sent.

The speed of sound in air is 340 m/s.

Calculate the distance from the sensor to the surface of the flour.

[3]
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4 Waves Questions

  1. GCSE
  2. /Physics
  3. /4 Waves

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