A certain siren radiates sound uniformly in all directions. At a distance of 17 m from the siren, the intensity level is 49 db. How many watts of power does this siren put out? The threshold of human hearing is $1.0 \times 10 ^ { - 12 } \mathrm {~W} / \mathrm { m } ^ { 2 }$

Question

A certain siren radiates sound uniformly in all directions. At a distance of  17 m from the siren, the intensity level is  49 db. How many watts of power does this siren put out? The threshold of human hearing is $1.0 \times 10 ^ { - 12 } \mathrm {~W} / \mathrm { m } ^ { 2 }$

Quizplus · Accepted Answer

The Answer of A certain siren radiates sound uniformly in all directions. At a distance of  17 m from the siren, the intensity level is  49 db. How many watts of power does this siren put out? The threshold of human hearing is $1.0 \times 10 ^ { - 12 } \mathrm {~W} / \mathrm { m } ^ { 2 }$

A Certain Siren Radiates Sound Uniformly in All Directions 1.0×10−12 W/m21.0 \times 10 ^ { - 12 } \mathrm {~W} / \mathrm { m } ^ { 2 }1.0×10−12 W/m2

A Certain Siren Radiates Sound Uniformly in All Directions $1.0 \times 10 ^ { - 12 } \mathrm {~W} / \mathrm { m } ^ { 2 }$