How much more intense is a 90 db hair dryer than 60 db street traffic?
1 Answer
Apr 18, 2018
Explanation:
Decibel level and intensity are related as
#"dB" = 10 log("I"/"I"_0)#
Where
#"I ="# Intensity of sound#"I"_0 =# Threshold intensity of least audible sound a human can hear
Subtract second equation from first
Plug in the values