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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V=W/Q is often remembered wrongly. In questions where you have to check the resistance from the graph see what is plotted along the x and y axis. Reason why alloys are used to make elements of electric irons and heaters is not because they are insulators. 2. Units 3. 4. Formula Graphs 5. Resistivity 6. Change in resistance If a wire is folded(doubled on it) and made half its length‚ then the resistance does not become half. 7. Resistors in series Is the current
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The main fact people need to know in order to understand “What is the Fastest Way to Cool a Soda?” is that placing objects in ice-as well as freezers and refrigerators-makes them colder. How does the object become cooler by being placed in ice? When you add ice to a warm drink‚ some of the drinks’ thermal energy is transferred to the ice (that is why the ice will melt in the drink) which makes the drink cooler. To thoroughly comprehend the project‚ more research and knowledge is required. There
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CERAMICS The word ceramic is derived from the word (keramikos). "Ceramics" means articles and objects made of clay with definite/permanent shape and fired at high temperatures. Clay is the only one and the unique material which when moistened with a suitable quantity of water‚ develops "PLASTICITY" which helps in manufacturing unlimited number of objects in various shapes and sizes. CERAMICS BEFORE CHRIST Ceramics is one of the most ancient industries on the planet. Once humans discovered that
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plate Deduce & calculate the effective capacitance of capacitors in series & parallel 2.1.1 Capacitor capacitor is electric component to store electric charge it is consists two conducting plates separated by a small air gap or a thin insulator (called dielectric such as mica‚ ceramics‚ paper) the conducting plates could be in the shape of : i. cylindrical ii. spherical iii. parallel plate 2.1.1 Capacitor symbol 2.1.1 Capacitor uses of capacitor: - capacitors are commonly used
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non-zero‚ unlike an insulator‚ yet still several magnitudes smaller than that of a conductor. There exists a significant energy gap between the filled valence – highest range of electron energies normally present at absolute zero – and empty conduction bands – range of energies which are enough to unbind the electron from the atom and allow it to move freely within the atomic lattice – in a semiconductor‚ unlike a conductor which has very small or no band gaps and/or an insulator which has very large
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w w Name ap eP m e tr .X Candidate Number w Centre Number 0625/06 PHYSICS Paper 6 Alternative to Practical May/June 2003 1 hour Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen in the spaces provided on the Question Paper. You may use a soft pencil for any diagrams‚ graphs or rough
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neutral collection of charged and neutral particles) • Solids • crystalline (atoms form a regular periodic structure) • amorphous (atoms have irregular spatial distribution) • Solids • metals (good electrical/heat conductors) • semiconductors • insulators (poor electrical/heat conductors) Bonding in solids: Ionic solids Ionic solid crystals (e.g. NaCl) are held together by the Coulomb attractive interaction between ions with opposite sign (ionic bonding) e2 b U = −αk + m r r (α = 1.7476
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University of Phoenix Material BUGusa‚ Inc.‚ Worksheet Use the scenarios in the Bugusa‚ Inc.‚ link located on the student website to answer the following questions. Scenario: WIRETIME‚ Inc.‚ Advertisement Has WIRETIME‚ Inc.‚ committed any torts? If so‚ explain. It seems WIRETIME‚ Inc. (a relatively new competitor) committed intentional tort advertising negative information in a well-known industry magazine in regard to BUGusa‚ Inc.’s devices being low quality and stating the devices
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1-INTRODUCTION:- The increasing demand of electrical power in cities and industrial centres necessitates the installation of a compact and efficient distribution and transmission network. High voltage gas insulated switchgear (GIS) is ideal for such applications. The range of application of SF₆ Gas Insulated Switchgear extends from voltage ratings of 72.5 kV up to 800 kV with breaking currents of up to 63 kA‚ and in special cases up to 80 kA. Both small transformer substations and large load- centre
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