Calculate the level in decibels for a sound having an intensity of 5.00 × 10 − 4 W m − 2 ?

Question

Calculate the level in decibels for a sound having an intensity of   5.00  ×      10          −      4        W      m          −      2      ?

Luna Wells · Accepted Answer

Intensity level of sound of power I in db as followsintensity level of sound   =  10      log          10        ⁡  (      I          I              0              )  d  bHence, intensity level of sound of power   I  =  5  ×      10          −      5            W          m              2             in db as followsintensity level of sound   =  10      log          10        ⁡  (            5      ×              10                  −          5                            10              −        12              )  d  b  =  10      log          10        ⁡  (  5  ×      10          7        )  d  b  =  10  (      log          10        ⁡  (  5  )  +  7  )  d  b=10(0.699+7)db=76.99db

Calculate the level in decibels for a sound having an intensity of 5.00x10^-4Wm^-2?

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