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Paraphin [41]
3 years ago
9

Define energy and provide examples of potential and kinetic energy

Physics
1 answer:
In-s [12.5K]3 years ago
6 0

Energy is the capacity for doing work..

Kinetic energy - Moving car

Potential energy - flowing water up the hill

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An organ pipe open at both ends has two successive harmonics with frequencies of 220 Hz and 240 Hz. What is the length of the pi
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Answer:

The  length is  l  =  8.6 \  m

Explanation:

From the question we are told that

   The frequencies of the two successive harmonics are f_1 =  220 \ Hz ,  f_2  =  240 \  Hz

   The speed of sound in the air is  v_s  =  343 \  m/s

Generally the frequency of a given harmonic is mathematically represented as

     f_n  =  \frac{n  v  }{2l}

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Now since the position of both harmonic is not know but we know that they successive then we can represented them mathematically as

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     240  =  \frac{(n+1) v}{2l}

So

   \frac{(n + 1 ) v}{2l} - \frac{n v}{2l}  =  240-220

=>  \frac{v}{2l}  =  20

=>   l  =  8.6 \  m

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