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Mechanical Properties Of Fluids

Question
CBSEENPH11018707

The velocity of sound in still air is 340m/s. The wind starts blowing opposite to the direction of sound with velocity 25m/s. What is the velocity of sound in blowing wind?

Solution
Velocity of sound in still air = 340 m/s
Velocity of the wind = 25 m/s
The velocity of sound in wind is blowing opposite to the direction of sound is,
V = v – u
   = 340 – 25
   = 315 m/s