A sonic boom is created by a shock wave when an object travels faster than the the speed of sound, or mach1. If the object does not achieve mach1 then there will be no sonic boom.
db=20log(V1/V2) or 10log(P1/P2) Example: db=20log (100/50) db=20log(2) db=20*.3010 db=6.02
(90 dB - 70 dB) = 20 dB = 100 times as much sound power.(100 times 'as much' = 99 times 'more')
10,000
I guess the reference power for 0 dB is 1 milliwatt. Then the power level 36 dB means a power ratio of 10^(36/10) = 3981 to 1.
Mach 1 is about 761.2 mph
about 720. or 1100ft/sec
A sonic boom is created by a shock wave when an object travels faster than the the speed of sound, or mach1. If the object does not achieve mach1 then there will be no sonic boom.
mach 1 = 340.29 m / s
db=20log(V1/V2) or 10log(P1/P2) Example: db=20log (100/50) db=20log(2) db=20*.3010 db=6.02
Roush
2 db's.
How many db is produced in a disco
That depends on you. If you want, you can say 1 watt should be 0 dB.
70 dB is 10 times louder than 60 dB.
(90 dB - 70 dB) = 20 dB = 100 times as much sound power.(100 times 'as much' = 99 times 'more')
10,000