Determine the average power generated by the horn

Reference no: EM13273196

2. A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 44 dB by an observer 10 km away.

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

(b) What intensity level of the horn's sound is observed by someone waiting at an intersection 56 m from the train? Treat thehorn as a point source and neglect any absorption of sound by the air.

3. An outside loudspeaker (considered a small source) emits sound waves with a power output of 110 W.

(a) Find the intensity 11.0 m from the source.

W/m2

(b) Find the intensity level in decibels at that distance.

Reference no: EM13273196

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