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Notes on pages 86-106 from The Earth and Its Peoples

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Notes on pages 86-106 from The Earth and Its Peoples Barrett Lewis Snow ? 1st Period Olmec Society (1200-400 BCE) Ancient civilization near modern-day Veracruz and Tabasco. Urban development was possible through agricultural advances. Corn, beans, and squash were staples in diet. Hierarchy implemented: Elite?s had raised platforms to mingle on in urban centers, artisans lived downtown, Domestication of foods, meant specialization. Developed irrigation and drainage canals, raised fields to be farmed, and built large public buildings became a signature Olmec icon. Urban complexes were aligned with certain stars, indicating a belief in astronomical events. Probable kingship. 11 foot carved heads found and believed to remember rulers

Physics springs practice problems

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2 kg 1) A 2-kg mass on a frictionless surface is attached to a spring. It is at rest when it is a) The mass completes 5 oscillations in 8 seconds. What is the force constant of the spring? b) At what time t is the mass 3 cm to the right of the equilibrium point? c) What is the maximum speed of the mass? Where is it when it has its maximum speed? m = 0 x pulled to the right a distance xmax = 10 cm and then released from rest at time t = 0. 2 kg 1) (continued) A 2-kg mass on a frictionless surface is attached to a spring. It is at rest when it is d) At what time t is the velocity of the mass 0.2 m/s [R]? e) Where is the mass when its velocity is 0.2 m/s [R]? Use two different methods to determine this. m = 0 x

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