What is Magnetism? Properties of Magnets: Magnet: any material that attracts iron and materials that contain iron Magnets attract iron and materials that contain iron. magnets attract or repel other magnets. In addition‚ one part of a magnet will always point north when allowed to swing freely. Magnetic Poles: Magnetic Pole: any magnet with 2 ends‚ each is called a magnetic pole. Magnetic poles that are unlike attract each other and magnetic poles that are alike repel each other. Magnetic
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Electricity was first researched by Thales of Miletos around 600BC. He conducted a few experiments on static electricity in which he believed that friction made amber become magnetized. Other than the fact that people knew that eels produced electric shocks‚ electricity was little more than an intellectual curiosity for over 2000 years. Until 1600 when someone from England discovered the lodestone effect when amber with static would attract small objects towards it. In the 18th century‚ Benjamin
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Lecture Notes: Basic Electricity Fall 2011 This course module introduces the basic physical models by which we explain the flow of electricity. The Bohr model of an atom – a nucleus surrounded by shells of electrons traveling in discrete orbits – is presented. Electrical current is described as a flow of electrons. Ohm’s law – the relationship between voltage‚ current and electrical resistance – is introduced. Learning Objectives Understanding the basic principles of electricity is a foundational
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CHAPTER - 12 ELECTRICITY HOTS Questions for Practice 1. Name a substance whose resistance almost remains unchanged by increase of temperature. 2. Name two special characteristics of heater coil. 3. A wire of resistance 4 ohms is bent to form a circle. What is the resistance between two diametrically opposite ends? 4. How does the resistance of a conductor change if its temperature is increased? 5. A current of 4A flows in a wire of resistance 60 ohms. Calculate electrical energy consumed in 2 minutes
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PERFECT SHOES SDN.BHD Tittle | Page | 1. Company Name | 2 | 1.1 Company Description | 4 | 1.2 Vision | 4 | 1.3 Objective | 4 | 1.4 Stakeholder Profile | 5 | 1.4.1 Organization 1.4.2 Job Description | 5 | COMPANY DESCRIPTION Perfect Shoes Company‚ Inc. (Perfect Shoes)‚ incorporated in 1913‚ is a global footwear retailer and wholesaler. The Company’s activities include the operation of retail shoe stores and e-commerce Websites‚ as well as the sourcing
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General Conclusion: These experiments helped us understand the importance of molecular polarity. This knowledge can now be used for the future to predict‚ for example‚ if two substances will mix or not. We can now do this by knowing that polar substances only mix with other polar substances‚ while non-polar substances only mix with other non-polar substances. This concept can be used to predict if a substance will be soluble in a specific solvent. The concepts of solubility and conductivity of a
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Electricity market in India . Anant Ashok Lohar Anant.lohar@hotmail.com Abstract-- A robust trading system is very important for free and fair competitive electricity market operation. Trading system should be capable of risk hedging associated with price volatility and other unexpected changes. Operating behavior of a competitive power market is significantly affected by the trading arrangements‚ strategic bidding‚ market model and rule. Trading arrangement is properly
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The Art of the Conclusion The conclusion of an essay should establish a sense of closure or completeness that leaves the reader with lingering thoughts about the topic. Each writer has their own approach in composing a conclusion that they feel solidifies their argument; every approach makes different demands of a reader because of the moves the writer chooses to make. The essays “How to Tame a Wild Tongue” by Gloria Anzaldua‚ “Translating Translation” by Alberto Alvaro Rios‚ and “Joyas Voladoras”
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As the conclusion‚ the university students nowadays prefer to improve their vocabulary skill through smartphones rather than other devices especially in this era. This because through the smartphones they can easily download application such as dictionary besides can work the vocxabulary lesson through offline or outside the class. At the same time‚ these can make students’ life more flexible to improve their vocabulary at anywhere and anytime they want it without sticking at one place to learn it
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Conductors and Insulators of Electricity A major reason electricity works is because of conductors. First metal‚ water‚ tall trees and tall items are good conductors because lightning is attracted to them. These materials have many mobile electrons. Metal is an easy substance for lightning to travel through so metals are good conductors. However‚ rubber is a bad conductor because lightning bounces off of it. A bad conductor is called an insulator. An insulator has a few mobile electrons. It is
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