8 times louder
100 times louder. You will hardly hear a 20 db(SPL) sound at all.
There are two syllables in siren. 'si ren'
The word lorry has two syllables. (Lor-ry)
depends on the siren... but about 4-10kW is average
70 dB is 10 times louder than 60 dB.
The Wailing Siren Mystery has 192 pages.
What kind of bloody question is that, but I will answer it for you anyway.... It all depends on the size of the lorry
10
maximum gross weight for a lorry in the uk is 44 tonnes (44 000 kg)
Many tornado sirens are former air raid sirens.
110
A 10 dB sound pressure level (SPL) is 0.000063 pascal and 100 dB is 2 pascal. Loudness is a problematic psycho acoustic feeling. I don't know what three times louder really means.