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frez [133]
2 years ago
7

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Physics
1 answer:
goblinko [34]2 years ago
5 0
Roygbv evjnefvvnefv ekfv k kn ke nv
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If 20 beats are produced within one second, which of the following frequencies could possibly be held by two sound waves traveli
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D. 22 Hz and 42 Hz

Explanation:

  • When two waves with different frequency travelling in the same medium meet each other, they produce an interference pattern called beat.
  • <em><u>The frequency of the beat produced is equivalent to </u></em><em><u>the difference between the individual frequencies of the two waves involved.</u></em>
  • <em><u>Therefore; in this case since the frequency of the beat is 20 Hz, that is from 20 beats per second.</u></em>
  • We need to find a pair from the choices whose frequency difference is 20 Hz.
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The (s) indicates that the state of matter for NaHCO3 is solid.

Explanation:

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