A Sound Pulsar Unit Puts Out Short Sound Bursts at Constant

question 139

Multiple Choice

A sound pulsar unit puts out short sound bursts at constant time intervals. This unit also has a receiver to listen to the time delay from an echo from any objects or walls. If the unit is positioned such that the echo time corresponds to the sound burst interval of 0.6 s, find the distance to the reflecting wall. Velocity of sound in air = 331 m/s.)

• A) 150 m
• B) 50.0 m
• C) 200 m
• D) 100 m
• E) None of the above.

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