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An echo is a reflection of sound that returns to the observer you clap loudly and hear your clap echo

 
 

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1.An echo is a reflection of sound that returns to the observer. You clap loudly and hear your clap echo ...

ho in 2.2 s. Determine the distance of the object that the sound reflected from. The air temperature is 18°C.
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

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