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Question 1: At a height of ten meters above the surface of a freshwater lake, a...

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Physics

Question 1: At a height of ten meters above the surface of afreshwater lake, a sound pulse is generated. The echo from thebottom of the lake returns to the point of origin 0.175 s later.The air and water temperatures are 20 oC. How deep isthe lake?

Question2: A hunter is standing on flat ground between twovertical cliffs that are directly opposite one another. He iscloser to one cliff than the other. He fires a gun and, after awhile, hears three echoes. The second echo arrives 1.92 s after thefirst, and the third echo arrives 1.46 s after the second. Assumingthat the speed of sound is 343 m/s and that there are noreflections of sound from the ground, find the distance (in m)between the cliffs.

Answer & Explanation Solved by verified expert
3.8 Ratings (466 Votes)
1The sound pulse travels twice the distance in air height above surface of water and twice the distance fromsurface of water to bottom of lake to produce an    See Answer
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