The average power and intensity level of a horn’s sound

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Question 1. Find the difference in decibel levels β1 & β2 of a sound source is related to the ratio of its distances r1 & r2 from the receiver by the formula

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Question 2. A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 50dB by an observer 10 km away.
(A) Find the average power generated by the horn?
(B) What intensity level of the horn’s sound is observed by someone waiting at an intersection 50m from the train?

Reference no: EM1312565

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