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Physics Lab

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Lab ?Conservation of Mechanical Energy Purpose: The purpose of this lab was to investigate the conservation of mechanical energy using a roller coaster to show that energy is constant/conserved but can change forms. Materials: CPO roller coaster track, physics stand, timer, photo gate, stainless steel marble, meter stick, lab paper, pencil, triple beam balance. Procedure: 1. Gather materials listed above. 2. Find the mass of the marble. 3. Assemble the rollercoaster. 4. Use the meter stick to measure the height from the top of the lab bench to the center of the marble at a number of positions on the roller coaster track, corresponding to the chart on the lab sheet. 5. Record this height on the data table. 6. Plug in and power on the photo gate. Set timer to ?interval?.

Effects of Slavery

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Slavery has made a substantial impact on American history and was the main factor that had provoked the Civil War. Though the outcomes of the war did grant freedom to the slaves, they were not given any rights as humans. Freedmen were continuously oppressed by the ?superior? whites, causing ?freedom? to just be a title with no meaning. Freedmen also faced adversities and disadvantages from racism, segregation, disdain, poverty, and violence for another century before they received equality. Although there were many attempts to bring equality to the blacks in the United States after they gained their freedom, there was minimal support due to the hatred fueled by the differences of skin color.

Haitian/Latin American rebellions

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In Latin America, the hacienda created a complex social order in society. Since most of the land was controlled by haciendas, it also employed most of the population. Each hacienda is distinct, ranging from hundreds of thousands to hundreds of people working/living here. Together, the residents of these haciendas create a village, as some people may be priests, teachers, clerks, accountants, storekeepers, hired shepherds and cattlemen, and families who rent land. Most of the workers however are African slaves or natives, enslaved by those who came from Europe, establishing a lower class.

9e Campbell Test Bank Chapter 3

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Campbell's Biology, 9e (Reece et al.) Chapter 3 Water and Life Life evolved in the ocean, and the chemistry of life occurs in an aqueous environment. These questions explore the properties of water that are important to sustain life?s chemical processes, organismal physiology, and interactions of organisms with their environment. Quantitative properties such as heat content, molarity, and pH are also addressed. A few questions address how human activities affect the global environment through acid rain and acidification of the ocean. Multiple-Choice Questions 1) In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by A) hydrogen bonds. B) nonpolar covalent bonds. C) polar covalent bonds. D) ionic bonds. E) van der Waals interactions.

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