A man drops a metal probe down a deep well drilling shaft that is 3920m deep.

A

anonymous

New member
If the temperature is 25 degrees? A man drops a metal probe down a deep well drilling shaft that is 3920m deep. If the temperature is 25 degrees C, which is the closest estimate of how long it takes to hear the echo after the probe is dropped (Consider the probe to be a freely falling object) ?

a.5.0 s
b. 10 s
c. 20 s
d. 30 s
 
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