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73 A policeman on duty detects a drop of 10% in the pitch of the horn of motion of car as it crosses him. If the velocity of sound is 330m/s find the speed of the car.

Answer» 73 A policeman on duty detects a drop of 10% in the pitch of the horn of motion of car as it crosses him. If the velocity of sound is 330m/s find the speed of the car.


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