things of the past. We now light our lamps with electricity. Switch on the button and there is the day-like light even in the darkest night. In summer seasons electric fans‚ air conditioning plants are used to provide us with cool atmosphere. In winter‚ heating plants are used to keep the room warm. Electric bells‚ press and stove are things of every-day use. People keep refrigerators in their homes to keep their food in a fresh condition. Indeed electricity serves as a faithful domestic servant in daily
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Electricity is one of the most important energies in people’s daily life. Without electricity‚ life will be tough and boring. We could only use candles for illumination and firewood for cooking. There would be not PCs‚ no TVs‚ and even no radios. Electricity brings us a great life and it is an affordable energy. The local electricity price in Fairbanks is about 16 cent per Kilowatt-hour. However‚ the waste of electricity is a serious problem in Wickersham hall. When you walking outside the Wickersham
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Transportation Transport or transportation is the movement of people‚ animals and goods from one location to another. Modes of transport include air‚ rail‚ road‚ water‚ cable‚ pipeline‚ and space. The field can be divided into infrastructure‚ vehicles‚ and operations. Transport is important since it enables trade between people‚ which in turn establishes civilizations. Transport infrastructure consists of the fixed installations necessary for transport‚ including roads‚ railways‚ airways‚ waterways
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HISTORY OF ELECTRICITY Depite what you have learned‚ Benjamin Franklin did not "invent" electricity. In fact‚ electricity did not begin when Benjamin Franklin at when he flew his kite during a thunderstorm or when light bulbs were installed in houses all around the world. The truth is that electricity has always been around because it naturally exists in the world. Lightning‚ for instance‚ is simply a flow of electrons between the ground and the clouds. When you touch something and get a shock
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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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1. How is electricity produced? The most simple way of producing static ekectricity is by rubbing or friction. When you rub two different kind of materials that are insulator‚ you can transfer electrons from one substance to another. Nowadays‚ to create electricity we use battery and generators. Voltage can be made by heart‚ light or mechanical pressure. http://science.howstuffworks.com/electricity-info2.htm 2. Where and how is electricity used? Electricity gives us ability to produce
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Electricity and electromagnetism: Webquest BBC Electricity and Magnetism http://www.bbc.co.uk/schools/ks3bitesize/science/energy_electricity_forces/magnets_electric_effects/activity.shtml Questions: 1. Why is an iron core needed in an electromagnet? 2. How are electromagnets different to either temporary or permanent magnets? 3. What happens when you add more coils to the wire in an electromagnet? What else can you do to increase the magnetic field of an electromagnet? Electromagnet Simulation
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Electricity is a form of energy. Electricity is the flow of electrons. All matter is made up of atoms‚ and an atom has a center‚ called a nucleus. The nucleus contains positively charged particles called protons and uncharged particles called neutrons. The nucleus of an atom is surrounded by negatively charged particles called electrons. The negative charge of an electron is equal to the positive charge of a proton‚ and the number of electrons in an atom is usually equal to the number of protons
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Magnet status is now a big thing/idea in the healthcare industry. Although I work in a nursing home facility‚ the 14 forces of Magnetism give me an overview of how I could potentially enhance myself professionally. The forces of Magnetism sum up what healthcare facilities should do to provide optimal patient care. Of the 14 forces of Magnetism‚ I think that the five forces that I could incorporate into my practice are: quality of nursing leadership‚ personnel policies and programs‚ quality of care
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