That value is the threshold of hearing.
minus 8..
12 x 12 is written as 122
x5
2x to the fourth power minus 162 equals -146
49 - 8 - 6 = 35
4²-3+11-12 = 16-3+11-12 = 12
-68 I think
10-10 = 0.0000000001 or 1x10-10 in standard form.
+ (plus) - (minus) / (divide) * (multiply) ^ (power) = (equals)
87209012 8.7209012 x 10 to the power of 7
Intensity = Power / Cross sectional area
Sound Intensity = Power / Area. So the more power delivered to a smaller area the greater the intensity.
-10
Power P is measured in watts and intensity I (power per area) is measured in power per square meter if you think e.g. of sound.
minus 8..
12 x 12 is written as 122
That ist the energy of noise. Sound intensity = sound power divided by area.