How Far Must You Be from a Tornado Siren for a 15 dB Decrease in Sound? Here is the trouble problem... 11) A tornado warning siren on top of a tall pole radiates sound waves uniformly in all directions. At a distance of 15 m the sound intensity of the siren is 0.39 . Neglect any...
Tons of news outlets are in Minneapolis, Minnesota for the Derek Chauvin trial, including CNN. Yesterday a CNN reporter was in Minneapolis starting a live broadcast when the monthly tornado siren test started to go off. The reporter in the studio freaked
The tornado siren(龙卷风报警器) sounded at the Little Sioux Scout(童子军) Ranch in western Iowa just before the power went out on June 11,2008. Scout Leader Fred Ullrich___the door of the building where he and 65 boy scouts had taken shelter. “I was___lightning and listening for the...