A stone is dropped into a well 44 m deep and the sound of splash is heard after 3.12 sec. Find the speed of sound in air
Answers
Answered by
0
Answer:
v = 28.2 m / s
Explanation:
v = s / t
as the time 3.12 s is the echo (time to go and and after reflecting from suface to come back ) 3.12 / 2 = 1.56 s
v = 44 / 1.56
v = 28.2 m / s
Answered by
0
Answer:
first the stone will take some time to reach bottom
by kinematic equation
S = ut + 1/2 at ²
44 = (0)t + 1/2(10)t²
5t²= 44
t² = 44 /5
t² ≅9
t = 3
by substracting this time in 3.12 we get time taken for sound to reach height 44m is
= 3.12 - 3
= .12 s
sow speed of sound is
speed = distance / time
= 44 / 0.12
= 365 m/s
Explanation:
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