Physics, 25.09.2019 01:30 Milosmom

Aboy drops a 0.10 kg stone down a 150 m well and listens for the echo. the air temperature is 20°c. how long after the stone is dropped will the boy hear the echo? the speed of sound through air at 20°c is v = 343 m/s.

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Aboy drops a 0.10 kg stone down a 150 m well and listens for the echo. the air temperature is 20°c....

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