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anonymous

  • one year ago

How far do sound waves travel in 1.00 × 10^-3 s in air at 20°C? A. 3.43 × 10^-3 m B. 3.43 × 10^-2 m C. 3.43 × 10^-1 m D. 3.43 × 10^1 m **Not sure :( thank you!

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  1. Michele_Laino
    • one year ago
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    we have to compute this: \[\Large d = vt = 343 \times {10^{ - 3}} = ...meters\]

  2. Michele_Laino
    • one year ago
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    since the speed of the sound in air at 20°C is about 343 m/sec

  3. anonymous
    • one year ago
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    okay!! so we get 0.343 ? so is choice A our solution?

  4. Michele_Laino
    • one year ago
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    that's right!

  5. Michele_Laino
    • one year ago
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    please wait, it is: 0.343 ok! so it is option C

  6. anonymous
    • one year ago
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    ohhh right!! it is positive!! so C it is!! :D thank you!

  7. Michele_Laino
    • one year ago
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    thank you!! :)

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