A square insulating sheet 80.0 cm on a side is held horizontally. The sheet has 7.50 nC of charge spread uniformly over its area. (a) Calculate the electric field at a point 0.100 mm above the center of the sheet. (b) Estimate the electric field at a point 100 m above the center of the sheet. (c) Would the answers to parts (a) and (b) be different if the sheet were made of a conducting material? Why or why not?
CDM 1150 – 03 Class Notes 2/9/16 Chapter 1: Intro to Human Communication 1.1The Importance of Studying Human Communication Help to understand how people communicate Communication differs from other social sciences because it focuses exclusively on the exchange of messages to create meaning Has a long history dating back to classical era of western civilization o Socrates, Plato, and Aristotle Communication is a complex activity influenced by a variety of factors o Cultural differences, cognitive abilities, and social norms Can help attain goals, establish relationships, and develop ones identity Communication i