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Thursday, January 30, 2014

A sound wave with a frequenc of 512 Hz and a wavelenth of 2.99 m is directed toward the bottom of a lake to measure its depth. If the echo of the sound from the bottom is heard 0.25 seconds later, how deep is the lake?


A sound wave with a frequenc of 512 Hz and a wavelenth of 2.99 m is directed toward the bottom of a lake to measure its depth. If the echo of the sound from the bottom is heard 0.25 seconds later, how deep is the lake?Need a Professional Writer to Work on this Paper and Give you an A+ 100 % Original Paper? CLICK HERE TO GET THIS PAPER WRITTEN

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