problem16_74

University Physics with Modern Physics with Mastering Physics (11th Edition)

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16.74: a) (See also Example 16.19 and Problem 16.66.) The wall will receive and reflect pulses at a frequency , 0 w f v v v - and the woman will hear this reflected wave at a frequency ; 0 w w 0 w w f v v v v f v v v v v v - + = - + The beat frequency is . 2 1 w w 0 w w 0 beat - = - - + = v v v f v v v v f f b) In this case, the sound reflected from the wall will have a lower frequency, and
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Unformatted text preview: using ) ( ) ( w w v v v v f +-as the detected frequency (see Example 21-12; w v is replaced by w v-in the calculation of part (a)), . 2 1 w w w w beat + = +--= v v v f v v v v f f...
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