Question

an iron block is dropped into a well .sound of splash is heard after 4.23 s.if depth of well is 78.4 then find speed of sound in air
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Answer 1

Answer:

340.87m/sec

Explanation:

time taken for iron block to reach water

= √(2S/g) = √(78.4*2)/9.8 =√16= 4

time taken for sound to travel = 4.23-4 = 0.23 secs

speed of sound = dist/time = 78.4/0.23 = 340.87m/sec