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Atrain sounds its horn as it approaches an intersection. the horn can just be heard at a level of 52 db by an observer 10 km away. (a) what is the average power generated by the horn? w (b) what intensity level of the horn's sound is observed by someone waiting at an intersection 56 m from the train? treat the horn as a point source and neglect any absorption of sound by the air. db
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Atrain sounds its horn as it approaches an intersection. the horn can just be heard at a level of 52...
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