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Question: A bat flying toward an obstacle at 10 m/s emits brief, high-frequency sound pulses at a repetition frequency of 75 Hz.
Part A: What is the time interval between the echo pulses heard by the bat?
Please include formulas and show work!
A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall. what is the magnitude of the horizontal component of force produced by the wall
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