What is the average power generated by the horn

Reference no: EM1372576

Q. A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 50 dB by an observer 10km away.

(i) What is the average power generated by the horn?

(ii) What intensity level of the horn's sound is observed by somebody waiting at an intersection 58m from the train?

Reference no: EM1372576

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