The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is defined as ere’o – 10

Question

The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is defined as
ere’o – 10
and is the least intense sound a human ear can hear. What is the approximate loudness of a
dinner conversation with a sound intensity of 10-7?
O -58 Db
O -50 Db
O 9 Db
O 50 Db

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Delilah 1 month 2021-10-21T18:21:32+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-10-21T18:22:37+00:00

    Answer:

    I_o = 10^{-12} \frac{W}{m^2} represent the minimum audible intensity by the humans

     I= 10^{-7} \frac{W}{m^2} represent the intensity for the dinner conversation

    And replacing this into the formula we got:

     dB = 10 log_{10} (\frac{10^{-7}}{10^{-12}})= 10 log_{10} (100000) = 50 dB

    So then the best answer for this case would be:

    O 50 Db

    Step-by-step explanation:

    For this case we can use the following equation for decibels:

     dB = 10 log_{10} (\frac{I}{I_o})

    Where:

    I_o = 10^{-12} \frac{W}{m^2} represent the minimum audible intensity by the humans

     I= 10^{-7} \frac{W}{m^2} represent the intensity for the dinner conversation

    And replacing this into the formula we got:

     dB = 10 log_{10} (\frac{10^{-7}}{10^{-12}})= 10 log_{10} (100000) = 50 dB

    So then the best answer for this case would be:

    O 50 Db

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45:7+7-4:2-5:5*4+35:2 =? ( )