live in a 21st century global society. The study of science and technology includes both processes and bodies of knowledge. Scientific processes are the ways scientists investigate and communicate about the natural world. The scientific body of knowledge includes concepts, principles, facts, laws, and theories about the way the world around us works. Technology includes the technological design process and the body of knowledge related to the study of tools and the effect of technology on society
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An average wind speed at the site of a turbine is 20 miles per hour. Because of these features on the towers, they rank Kansas the 3rd in the US for wind energy potential. The Gray County Wind Farm in Kansas, powered by Florida Power and Light Energy, has collected data from 2001-2009 on electricity production.... [tags: kansas, wind energy, wind turbines] :: 1 Works Cited 1537 words (4.4 pages) $29.95 [preview] Analysis of Wind Turbine Designs - Abstract Bill Gates, founder of Microsoft and
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Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale such as sunlight, wind, rain, tides, waves, and geothermal heat. Renewable energy replaces conventional fuels in four distinct areas: electricity generation, air and water heating/cooling, motor fuels, and rural energy services. Based on REN21's 2014 report, renewables contributed 19 percent to our global energy consumption and 22 percent to our electricity generation in
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of Neap. Copyright © 2014 Neap ABN 49 910 906 643 96–106 Pelham St Carlton VIC 3053 Tel: (03) 8341 8341 Fax: (03) 8341 8300 TEVPHYU34_SS_2014.FM VCE Physics Units 3&4 Trial Examination Suggested Solutions SECTION A – CORE Area of study – Motion in one and two dimensions Question 1 (10 marks) a. v v = 12 sin 60° = 10.4 m s b. t air = 2 × t top 0 – 10.4 t top = ------------------ = 1.04 – 10 t air = 2 × 1.04 = 2.1 1 2 s = -- at 2 2 1 = -- ( 10 ) ( 1.04 ) 2 –1 1 mark 1 mark 1
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oceans, lands and air. This in turn heats the planet’s surface and atmosphere, making life possible. As Earth warmed up, this solar energy is radiated by thermal radiation or infrared heat, traveling directly out to space, thus cooling the Earth. However, some of the outgoing radiation is re-absorbed by carbon dioxide, water vapor and other gases in the atmosphere and is radiated back to Earth’s surface; these gases are known as greenhouse gases due to their heat-trapping capacity. This re-absorption
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Time (mins) T(0C) 0 1 2 3 4 5 6 7 8 300 Liquid Vapour Solid 1. If the gas is cooled, at what temperature will it start to condense? (A) 1250C (B) 1500C (C) 1750C (D) 2500C 2. How long does it take all the solid to melt? (A) 2.5 mins (B) 6.0 mins (C) 1.0 mins (D) 3.0 mins 3. 25cm3 of a gas X contains Z molecules at 150C and 75mmHg. How many molecules will 25cm3 of another gas Y contain at the same temperature and pressure? (A) 2Y (B) 2Z (C) Z (D) Y 4. What mass of water is produced when 8.0g of hydrogen
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Experiment : Title : Objective : 1 Preparation of standard solution and standardization of hydrochloric acid To prepare a standard solution of sodium carbonate and use it to standardize a given solution of dilute hydrochloric acid. Anhydrous sodium carbonate is a suitable chemical for preparing a standard solution (as a primary standard). The molarity of the given hydrochloric acid can be found by titrating it against the standard sodium carbonate solution prepared. The equation for the complete
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chemistry behind biomolecules What is biochemistry? Well, it’s the study of biology at a molecular level. So the emphasis of this unit is the biological significance of chemical molecules. As part of the course, there are six biological molecules that you need to know about: CH2OH Carbohydrates O H H OH OH These molecules are one of many vital to life. They are used for energy (for both storing and supplying energy), and in some cases can be used structurally, such as cellulose
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1 KHYBER PAKHTUNKHWA PUBLIC SERVICE COMMISSION SYLLABUS FOR PROVINCIAL MANAGEMENT SERVICE COMPETITIVE EXAMINATION The Syllabus and standard for the Competitive Examination for the Provincial Management Service shall be as under : 1. The Examination shall include compulsory and optional subjects, and every candidate shall take all the compulsory subjects and opt for three of the optional subjects carrying 600 marks in all but not more than 200 marks from a single group. 2. A candidate shall answer
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Chemistry Notes 2010 Core Module 1: Production of Materials Contextual Outline Humans have always exploited their natural environment for all their needs including food, clothing and shelter. As the cultural development of humans continued, they looked for a greater variety of materials to cater for their needs. The twentieth century saw an explosion in both the use of traditional materials and in the research for development of a wider range of materials to satisfy technological developments.
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