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Humanities

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

Chapter 14

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The Westward Movement The life as a pioneer was very grim. Pioneers were stricken with disease and loneliness. Shaping the Western Landscape Fur trapping was a large industry in the Rocky Mountain area. Each summer, fur trappers would trade beaver pelts for manufactured goods from the East. George Caitlin- painter and student of Native American life who was among the first Americans to advocate the preservation of nature; proposed the idea of a national park. The March of Millions By the mid-1800s, the population was doubling every 25 years. By 1860, there were 33 states and the U.S. was the 4th most populous country in the western world. The new population and larger cities brought about disease and decreased living standards.

AP Bio, chapter 15: the chromosomal basis of inheritance

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