A policeman on duty detects a drop of 10% in the pitch of the horn of a motor car as it crosses him. If the velocity of sound 330 m's, calculate speed and the car.

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A policeman on duty detects a drop of
10% in the pitch of the horn of a motor car as it
crosses him. If the velocity of sound 330 m's,
calculate speed and the car.
Transcribed Image Text:A policeman on duty detects a drop of 10% in the pitch of the horn of a motor car as it crosses him. If the velocity of sound 330 m's, calculate speed and the car.
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