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Q. Suppose you are climbing in the High Sierra when you suddenly find out yourself at the edge of a fog-shrouded cliff. To find the height of this cliff, you drop a rock from the top and, 7.00 {rm s} later, hear the sound of it hitting ground at the foot of the cliff. Ignoring air resistance, how high is the cliff if the speed of sound is 330 {rm m/s}?

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