A train sounds its horn as it approaches an intersection.The horn can just be heard at a level of 50 dB by anobserver 10 km away. (a) What is the average power generatedby the horn? (b) What intensity level of the hornssound is observed by someone waiting at an intersection50 m from the train? Treat the horn as a point sourceand neglect any absorption of sound by the air.
POLS 310 Chapter 1 Part 16 o The contemporary globalized culture is highly secular, and that itself is a source of tension. Critics of the culture contend it is based on the constant pressure to purchase more and more material products, with marketing specialists who create artificial demands for the latest, newest, most improved telephone, television, automobile, clothing, etc. This global consumer culture is the target of many critics including “deep green” ecotopians and some fundamentalist religious communities These groups object to the emphasis on materialism and the undermining of traditional norms and values that goes with Wes
