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A boy stands at a dark well and wants to investigate how deep this well is. He therefore throws a stone into the well and aft

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given data time (t) = 2.6 sec sound speed (&) = 340 ml see Soll in If » sound speed not included them 3 det depth of well = dtime (tal = 2.6 + (da 340 time sound to reach the ear to de = fata + 1 X 9.81 (2.6+daj? 340 i do = 35.906 m. so difference =

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