- #1
maccaman
- 49
- 0
Here is the question as it follows:
The decibel scale, defined as
[tex] L = 10 log (\frac{I}{I_0}) [/tex]
where L is the Loudness (or comparative intensity) in decibels (dB),
[tex] I_0 [/tex] is the reference level (10^-12 watts per m^2)
I is the actual intensity of the sound measured (watts per m^2).
now here's the question part:
An owner of an industrial plant next to a residential suburb agreed to limit noise to 75dB with a variation of up to 15% at a distance of 100m from the factory gates. Residents subsequently complained that sounds often reached 85dB. The manager replied, "It's not far over the limit - it's under the 15% variation agreed." Discuss whether or not the mangers statement is justified.
Dont quite know what there getting at, any help would be greatly appreciated.
The decibel scale, defined as
[tex] L = 10 log (\frac{I}{I_0}) [/tex]
where L is the Loudness (or comparative intensity) in decibels (dB),
[tex] I_0 [/tex] is the reference level (10^-12 watts per m^2)
I is the actual intensity of the sound measured (watts per m^2).
now here's the question part:
An owner of an industrial plant next to a residential suburb agreed to limit noise to 75dB with a variation of up to 15% at a distance of 100m from the factory gates. Residents subsequently complained that sounds often reached 85dB. The manager replied, "It's not far over the limit - it's under the 15% variation agreed." Discuss whether or not the mangers statement is justified.
Dont quite know what there getting at, any help would be greatly appreciated.