An outside loudspeaker $($considered a small source$)$ emitssound waves with a power output of $100$ W$.($a$)$Find the inten$-$sity $10\mathrm{.}0$ m from the source. $($b$)$ Find the intensity level indecibels at that distance. $($c$)$ At what distance would you expe$-$rience the sound at the threshold of pain, $120$ dB$?$