..ooo T-Mobile 6:02 PM 8 58%) capa8.phy.ohio.edu Chinazom Isioma Student -sectio

Question

..ooo T-Mobile 6:02 PM 8 58%) capa8.phy.ohio.edu Chinazom Isioma Student -section: 101 Physics l Messages Courses Heal 2017 Main Menu Contents Grades Course Contents » » Assignment 8 Timer Notes Evaluate Feedback PrintInfo Intensity and Intensity Levels Due in 5 hours, 56 minutes What is the intensity level in decibels for a sound with an intensity of 2.62×10-3 W/m2? (do not enter units) Submit AnswerTries 0/10 What is the intensity for a sound with an intensity level of 36.0 dB? (enter units) Submit AnswerTries 0/10 discussion is closed. Send Feedback

Explanation / Answer

1) dB = 10 log (I/Io), where Io = 1 X 10^-12 Watts / m^2

dB = 10 log (2.62X10^-3 / 1 X 10^-12) = 94.18 dB

2) 10 log (x / 1 X 10^-12) = 36.0 dB

log (x / 1 X 10^-12) = 3.6

(x / 1 X 10^-12) = 3.981*10^3

x = 3.98*10^-9 W/m^2

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