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Trying to determine its depth, a rock climber drops a pebble into a chasm and hears...

Trying to determine its depth, a rock climber drops a pebble into a chasm and hears the pebble strike the ground 3.54 s later.

(a) If the speed of sound in air is 343 m/s at the rock climber's location, what is the depth of the chasm? m

(b) What is the percentage of error that would result from assuming the speed of sound is infinite? %

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