A whistle emitting a sound of frequency 440 Hz is tied to a string of 1.5 m length and ratated with an angular velocity of 20 rad .s^(-1)in the horizontalplane . Find the range of frequencies heard by an observer stationed at a large distance from the whistle . Speed of sound V = 350 m . s^(-1),

A whistle emitting a sound of frequency 440 Hz is tied to a string of

1.	A whistle emitting a sound of frequency 440 Hz is tied to a string of 1.5 m length and ratated with an angular velocity of 20 rad .s^(-1)in the horizontalplane . Find the range of frequencies heard by an observer stationed at a large distance from the whistle . Speed of sound V = 350 m . s^(-1),
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