city-states. As we know‚ catapults were mainly used in the medieval era‚ or rather‚ it is most famous for use in that time‚ which you have probably seen in movies and books. How Does the Catapult Work? There is quite a bit of science behind the making of the catapult‚ and how it works. It is similar to a ballista that it works by storing tension in a flexed piece of wood or in twisted ropes. It’s similar to a bow‚ but on a much larger scale. However‚ that is just the catapult which is probably most
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HOW AN ELECTRIC GENERATOR WORKS Electrical generators by definition are devices that convert mechanical energy into electric energy. The mechanical energy in turn is produced from chemical or nuclear energy in various types of fuel‚ or obtained from renewable sources such as wind or falling water. Steam turbines‚ internal-combustion engines‚ gas combustion turbines‚ electric motors‚ water and wind turbines are the common methods to supply the mechanical energy for such devices. Generators
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How Does the Thermometer Work? A thermometer is a device that measures the temperature of things. The name is made up of two smaller words: "Thermo" means heat and "meter" means to measure. You can use a thermometer to tell the temperature outside or inside your house‚ inside your oven‚ even the temperature of your body if you’re sick. One of the earliest inventors of a thermometer was probably Galileo. We know him more for his studies about the solar system and his "revolutionary" theory
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Marquee A. Villanueva How a Fax Machine Works It is very typical and practical in an office to have a fax machine. Every time you walk in to an office‚ you may see one of these machines but have you ever wondered how they work? Have you ever thought‚ how can a machine transfer information from one phone to another without really sending the original document? Some people might think it’s magic but it is actually not. It is science in use‚ technology. All of this may sound to high-tech
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Assignment 1 Unit 1: Investigating How Businesses Work In this task I will be writing about Marks & Spencer as it is an international business and is very popular. Ownership Company Profile Marks & Spencer Marks & Spencer is a super market but it also sells clothing‚ home stuff and much more. Marks & Spencer are an international business which has 337 stores in 41 territories overseas. They also have 703 stores in the United Kingdom. They sell products to customers which are satisfactory and what
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Essay on EKG Replacement for missing work By Mohammad Chenchar http://www.webmd.com/heart-disease/electrocardiogram http://www.nobelprize.org/nobel_prizes/medicine/laureates/1924/einthoven-bio.html http://www.ecglibrary.com/ecghist.html EKG is an electrocardiogram‚ a machine used to check on problems with your electrical activity with your heart. An electrocardiogram machine translates the heart’s electrical pattern into lines that specific professionals can read
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Explain giving examples how the reliance on journalists working in commercial media constraints the ability of media advocates Explain how an elitist theory of democracy and focus on mainstream journalism constraints the ability of media advocates How would media advocacy look like if informed by a participatory theory of democracy? Explain giving examples Why is democracy a dangerous form of government? Explain. Democracy includes a genuine competition for power. Explain Democracy permits mass participation
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Health and Safety How to work safely at a computer All jobs have elements of risks to your health. Some maybe more than others. Even working at a computer poses a risk on your health and well-being. The risk? Upper limb disorders (ULD’s) or repetitive strain injuries (RSI’s) Now in order to reduce the risk of suffering from these problems‚ it is essential to understand how you get them in the first place. ULD’s normally occur when you have a job which requires a lot of twisting
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Discuss how a) expectancy theory and b) equity theory can explain motivation at work. Motivation is the cognitive decision-making process through which goal-directed behavior is initiated‚ energized‚ directed‚ and maintained (Buchanan & Huczynski‚ 2010‚ p. 267) There are two types of theories that attempt to explain motivation at work – process theories and content theories. Content theories of motivation focus on goals that motivate employees while process theories focus on how employees
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Promoting Health Education P1 Explain three different approaches to health education For my health education campaign I have chosen to teach my listeners about sweeteners that are replacing sugar‚ such as Aspartame. Aspartame is made up of three chemicals: Aspartic acid‚ phenylalanine‚ and methanol. NutraSweet‚ Equal‚ Spoonful‚ and Equal-Measure‚ all of these are brand names for aspartame‚ the most popular low-calorie sugar substitute used in more than 90 countries to sweeten foods and beverages
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