problem35_44

# problem35_44 - = = 6 . 60 m 422 . m 210 . 4 7 sin 9 . 21 m...

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35.44: First find out what fraction the 0.159 ms time lag is of the period. ) Hz (1570 s) 10 159 . 0 ( ) s 10 159 . 0 ( 10 159 . 0 3 3 3 - - - × = × = × = f T s t , 250 . 0 = t so the speakers are 4 1 period out of phase. Let A be ahead of B in phase. m 210 . 0 Hz 1570 s m 330 λ = = = f v centerline of side s A On ' : Since A is ahead by 4 1 period, the path difference must retard B’s phase enough so the waves are in phase. ° = = ° =
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Unformatted text preview: = = 6 . 60 m 422 . m 210 . 4 7 sin 9 . 21 m 0.422 m 0.210 4 3 sin ,... λ 4 7 , λ 4 3 sin 2 2 1 1 θ d centerline of side s B On ' : The path difference must now retard A’s sound by , λ , λ 4 5 4 1 °-°-=-5 . 38 , 2 . 7 gives , λ 4 5 , λ 4 1 sin d...
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## This note was uploaded on 01/31/2009 for the course PHYS 221 taught by Professor Hu during the Spring '08 term at Texas A&M.

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