Rotating Lighthouse Beacon Problem: Figure 3-3h shows a lighthouse 500 m from the shore. Figure 3-3h A rotating light on the top of the lighthouse sends out light beams in opposite directions. As the beacon rotates through an angle , a spot of light moves along the shore. Let L be the length of the light beam from the lighthouse to the spot on the shore. Let D be the directed distance along the shore to the spot of light; that is, D is positive to the right if youre on the shore facing the lighthouse and negative to the left. b. When = 55, where does the spot of light hit the shore? How long is the light beam? c. What is the first positive value of for which the light beam will be 2000 m long? d. Explain why D is negative for 90 < < 180 and for 270 < < 360 and why L is negative for 90 < < 270. e. Explain the physical significance of the asymptote in each graph at = 90.
Exam Study Guide Chapter 8 Political Systems -Substantial variation in power, authority, and legal systems Power- ability to exercise one’s will over others Authority- is formal, socially approved use of power Sociopolitical Organization: discussing regulation or management of interrelations among groups and their representatives Elman Service: Four types, or levels of political organization Band: small kin-based group among foragers Tribe- economy based on nonintensive food production Chiefdom- intermediate form between tribe and state Differential Access: favored access to resources by superordinate or subordinates State- formal governmental structure and socioeconomic stratification Foraging Bands- Modern foragers live in nation- states and interline