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Physics, 09.07.2019 04:30 ahmedeldyame
Aperson drops a stone down a well and hears the echo 8.9 s later. if it takes 0.9 s for the echo to travel up the well, approximately how deep is the well?
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Aperson drops a stone down a well and hears the echo 8.9 s later. if it takes 0.9 s for the echo to...
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