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A man drops a rock into a well. (a) The man hears the sound of the...

A man drops a rock into a well.

(a) The man hears the sound of the splash 2.96 s after he releases the rock from rest. The speed of sound in air (at the ambient temperature) is 336 m/s. How far below the top of the well is the surface of the water?
m

(b) If the travel time for the sound is ignored, what percentage error is introduced when the depth of the well is calculated?
%

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