A person standing $1\mathrm{.}15$ m from a portable speaker hears its sound at an intensity of $7\mathrm{.}10103$ W$/$m$2.$

HINT

$($a$)$

Find the corresponding decibel level.

dB

$($b$)$

Find the sound intensity $($in W$/$m$2)$ at a distance of $36\mathrm{.}0$ m$,$ assuming the sound propagates as a spherical wave.

W$/$m$2$

$($c$)$

Find the decibel level at a distance of $36\mathrm{.}0$ m$.$A person standing $1\mathrm{.}15m$ from a portable speaker hears its sound at an intensity of $7\mathrm{.}10{10}^{-3}\frac{W}{m^2}.$

$($a$)$ Find the corresponding decibel level.

$dB$

$($b$)$ Find the sound intensity $($in $\frac{W}{m^2})$ at a distance of $36\mathrm{.}0m,$ assuming the sound propagates as a spherical wave.

$\frac{W}{m^2}$

$($c$)$ Find the decibel level at a distance of $36\mathrm{.}0m.$

$dB$