# samp16 - f a and a lower frequency from the fork that she...

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SAMPLE PROBLEM (Class 16) ANS: a) The observer will hear a higher frequency from the fork that is approaching her, f a and a lower frequency from the fork that is departing from her, f d . The beat frequency will be the difference between these two frequencies. - - - + = + - - = + - - = - = 2 2 ) ( 1 1 S S S S S S S d a beat v v v v v v fv v v v v fv v v v f v v v f f f f 2 2 2 2 m/s) 0 . 30 ( m/s) (343 m/s) m/s)(30.0 2(343 Hz) 440 ( 2 - = - = S S beat v v vv f f f beat = 77.6 Hz b) The observer will hear a higher frequency from the fork that she is approaching,
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Unformatted text preview: f a and a lower frequency from the fork that she is departing from, f d . The beat frequency will be the difference between these two frequencies. = =--+ =-= m/s 343 m/s) . 30 ( 2 Hz) 440 ( 2 v v f v v v f v v v f f f f D D D d a beat f beat = 77.0 Hz...
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