Science Folio Chapter 5 B6D5E1 Title: Importance of maintaining the cleanliness of air Introduction The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth’s gravity. The atmosphere protects life on earth by absorbing ultraviolet solar radiation‚ warming the surface through heat retention (greenhouse effect)‚ and reducing temperature extremes between day and night. One of the most important factors drawing international attention which is
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Science has done great service to mankind. Science has ensured life to be safer‚ surer and much more comfortable than ever before. Science has helped man to make computers‚ artificial satellites and robots. Science has given the Americans a defense umbrella in space and it has given the Russians a permanent space station. Russia‚ it is believed‚ will have an industrial city in space before 2050 A.D. This would be the height of achievement in the field of science and technology. Science has
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when particles obtained cannot be divided further. Democritus called these indivisible particles atoms (meaning indivisible). How and why elements combine and what happens when they combine. Antoine L. Lavoisier laid the foundation of chemical sciences by establishing two important laws of chemical combination. (a) The Law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. (b) The law of constant proportions which is also known as the law of
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growing in the field of science‚ but also flowed over into the realms of religion‚ the arts‚ politics and the social ways of all citizens. The scientific movement in the 18th century was a critical part of history‚ as it ushered in some of the most important scientific finds built upon the discoveries of the 16th and 17th centuries‚ such as Bacon’s scientific method and Galileo’s astronomy research. The
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SCIENTIFIC ADVANCEMENT IS A BOON OR BANE INTRODUCTION Science offers knowledge based on experiment and observation‚ but technologyis the total sum of the application of knowledge. This has made life easy and comfortablefor the user. A country said to be a developed country when it has many technicaladvancements. A small country like japan has succeeded to acquire this prestige becauseof its advancements and applications of technology at a high level. This century is the ageof Science. We cannot
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Set 1 1. To separate sand and camphor in pure state from the given mixture of sand and camphor. 2. To separate sand and salt in pure and dry state from the given mixture of sand and salt. 3. To prepare common salt by treating acid with base. 4. To prepare crystal of copper sulphate from the given mixture of sand and copper sulphate. 5. To prepare barium sulphate by treating barium chloride with dilute sulphuric acid in pure state. 6. To separate sand and calcium carbonate
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1 Proving of Identities Answer the following: cos(θ − β) = tanθ + cotβ is an identity. cosθ sinβ 1. Show that 2. Prove that sin(x + y) + sin(x − y) = 2 sinx cosy. 3. Verify that sin(x − y) tanx − tany = sin(x + y) tanx + tany 4. Derive an identity for cos3θ in terms of cosθ. 5. Prove that sin2θ + sinθ = tanθ is an identity. cos2θ + cosθ + 1 2tanθ = sin2θ is an identity. 1 + tan2 θ 6. Verify theta 7. Prove that x 2 − tan2 = 1 is an identity. 1 + cosx 2 8. Show
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Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. obseRvations
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Inventions created during the ancient eras often leave an impact on the civilizations around at the time‚ but over time‚ fade due to steadily improving technology. Though with the innovations from Ancient China such as paper‚ print and the gun‚ the inventions not only effected Ancient China‚ but the entire globe‚ and still to this day are heavily relied-upon tools in the modern world. As China became one of the most developed nations during the early common era‚ many other nations began to express
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Koerselman Western Civilization Section D 29 November 2013 Copernicus and the Scientific Revolution The Scientific Revolution of the sixteenth and seventeenth century is known for its cosmological discoveries and its introduction to a new way of investigating nature. This revolution challenged the medieval perspective and influenced great minds such as Galileo‚ Francis Bacon‚ and Foucault. Thinkers of the Scientific Revolution rejected utter reliance on authorities‚ such as the Church‚ and strived
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