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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