Compute the average power generated by the horn

Reference no: EM13679467

A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 54 dB by an observer 10 kilometer away.

(a) Compute the average power generated by the horn?

_______________W

(b) Find what intensity level of the horn's sound is observed by someone waiting at an intersection 46 meter from the train? Treat the horn as a point source and ignore any absorption of sound by the air.

_______________dB

Reference no: EM13679467

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