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Q3/A-IA helicopter at a distance of 10 m from a boy, emits its sound regularly in all directions. If the level of its sound intensity of hearing boy was 100 dB , what ( 1) sound power issued by this plane ? (2) The time rate of the sound energy falling on the boys eardrum, an area 8x10^-3 m^2. *

Q3/A-IA helicopter at a distance of 10 m from a boy, emits its sound regularly in all directions. If the level of its sound intensity of hearing boy was 100 dB , what ( 1) sound power issued by this plane ? (2) The time rate of the sound energy falling on the boys eardrum, an area 8x10^-3 m^2. *

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Q3/ Q3/A-IA helicopter at a distance of 10 m from a boy , emits its sound regularly in all directions. If the level of its sound intensity of hearing boy was 100 dB , what ( 1) sound power issued by this plane ? (2) The time rate of the sound energy falling on the boys eardrum , an area 8x10^-3 m^2. *
Transcribed Image Text:Q3/ Q3/A-IA helicopter at a distance of 10 m from a boy , emits its sound regularly in all directions. If the level of its sound intensity of hearing boy was 100 dB , what ( 1) sound power issued by this plane ? (2) The time rate of the sound energy falling on the boys eardrum , an area 8x10^-3 m^2. *
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