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What is the beat frequency heard when two organ pipes, each open at both ends, are...

What is the beat frequency heard when two organ pipes, each open at both ends, are sounded together at their fundamental frequencies if one pipe is 52 cm long and the other is 62 cm long?(The speed of sound is 340 m/s). Answer in Hz

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Answer #1

the speed of sound v=340m/s

the length of the open organ pipe =52cm=0.52m and =62cm=0.62m

the length in open pipe l=  then wave length

the fundamental frequency of the open organ pipe

if the fundamental frequencies of the both organ pipe and

the beat frequency

  

  

  

an average human ear can not distinguish the variations if it is more than 16 beats per sec (16Hz).so, the frequency of beats 52.7Hz is difficult to distnguish.

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