algebra

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Find the number of decibels for the power of the sound given. Round to the nearest decibel.
A rocket engine,
2.42 * 10^5 watts cm^2

what is the db?

  • algebra -

    db=10*Log(2.42*10^5)=10*Log(242000) = 54

  • algebra -

    Correction:
    db = 10*Log(2.42*10^5/10^-16) =
    10*Log(2.42*10^21) = 81

  • algebra -

    Oops!!
    10*Log(2.42*10^21) = 214 db.

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