Acertain source of sound waves radiates uniformly in all directions. at a distance of 14 m from the source the intensity level is 67 db. what is the total acoustic power output of the source, in watts? (note: the reference intensity i 0 is 1.0 × 10-12 w/m2.)

Explanation:

It is given that,

At a of 14 m from the source the intensity level is 67 db. We need to find the total acoustic power output of the source. The intensity level is given by :

(reference intensity)

or

Output power is given by :

P = 0.0123 watts

So, the output power of the source is 0.0123 watts. Hence, this is the required solution.

power out to power in less than 100%

i think its c if i'm wrong