a sonic tape measure is used to measure the length of a room.it measures a time interval of 0.06 s between transmitting a sound pulse and recieving the echo .the speed if sound in air is 330 m/s.how far is the reflecting wall from the tape measure??????  explain step by step......

Hi,
The sonic tape measures the time interval of 0.06 s between transmitting a sound pulse and receiving the echo.
So, the time taken by the sound pulse to reach the wall of the room =
Speed of sound in air is = 330 m/s

We know,

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