Question

Use the following information for determining sound intensity. The number of decibels (eta) of a sound with an intensity of I watts per square meter is given by (eta = 10 log(I/I_o)), where (I_o) is an intensity of (10^{-12}) watt per square meter, corresponding roughly to the faintest sound that can be heard by the human ear. Find the number of decibels (eta) of the sound. (a) (I = 10^{-4}) watt per m² (door slamming) dB (b) (I = 10^2) watt per m² (jet at 30 meters) dB (c) (I = 10^{-11}) watt per m² (rustle of leaves) dB (d) (I = 10^{-2}) watt per m² (siren at 30 meters) dB

          Use the following information for determining sound intensity. The number of decibels (eta) of a sound with an intensity of I watts per square meter is given by (eta = 10 log(I/I_o)), where (I_o) is an intensity of (10^{-12}) watt per square meter, corresponding roughly to the faintest sound that can be heard by the human ear. Find the number of decibels (eta) of the sound.
(a)
(I = 10^{-4}) watt per m² (door slamming)
dB
(b)
(I = 10^2) watt per m² (jet at 30 meters)
dB
(c)
(I = 10^{-11}) watt per m² (rustle of leaves)
dB
(d)
(I = 10^{-2}) watt per m² (siren at 30 meters)
dB

Use the following information for determining sound intensity. The number of decibels (eta) of a sound with an intensity of I watts per square meter is given by (eta = 10 log(I/Io)), where (Io) is an intensity of (10^-12) watt per square meter, corresponding roughly to the faintest sound that can be heard by the human ear. Find the number of decibels (eta) of the sound.
(a)
(I = 10^-4) watt per m² (door slamming)
dB
(b)
(I = 10^2) watt per m² (jet at 30 meters)
dB
(c)
(I = 10^-11) watt per m² (rustle of leaves)
dB
(d)
(I = 10^-2) watt per m² (siren at 30 meters)
dB

Added by Jacqueline G.

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