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A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 42 dB by an observer 10 km a...Asked by Anonymous
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 59 dB by an observer 14 km away.
(a) What is the average power generated by the horn? (b) What intensity level of the horns sound is observed by someone waiting at an intersection 46 m from the train? Treat the horn as a point source and neglect any absorption of sound by the air.
(a) What is the average power generated by the horn? (b) What intensity level of the horns sound is observed by someone waiting at an intersection 46 m from the train? Treat the horn as a point source and neglect any absorption of sound by the air.
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