Question

a stone is dropped into a well and the sound of splash is heard in 5.3 seconds .if the water is at depth of 122.5m from the ground , the velovity of sound in air is​

Answer 1

Answer :

• Velocity of sound is 350m/s

Explanation :

Given,

• Height = 122.5m
• let, time of flight be t

$\implies \: t = \sqrt{ \frac{2h}{g} }$

$\implies \: t = \sqrt{\frac{2 \times 122.5}{9.8} }$

$\implies \: t = \sqrt{25}$

$\implies \: t = 5secs$

• Time after splash sound was heard = 5.35secs

• Time Taken by sound to travel = 5.35 - 5 = 0.35 secs

Speed of sound = distance/time

$\implies \: \frac{122.5}{0.35}$

$\implies \: 350mps$

• Therefore, the velocity of sound is 350m/s

Answer 2

Answer:

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Explanation:

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