Kevin Williams Project 1 The use of electricity and magnetism in transportation When Benjamin Franklin discovered electricity‚ it was probably one of the biggest discoveries known to mankind. Even though our dependence of electricity is a lot‚ however at the same time it’s easy to forget how dependent we actually are on it. Electricity always has and always will play a huge part in our everyday life. It’s hard to imagine humanity without it. When it comes to transportation‚ it is going to rewrite
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finishing time have significant effect on the surface roughness obtained. Analysis of experimental data showed that change in surface roughness (ΔRa) was highly influenced by mesh number followed by percentage weight of abrasives‚ rpm of permanent magnet‚ and finishing time. Key Words: Magnetic abrasive finishing (MAF)‚ Design of experiments‚ Surface roughness. 1. Introduction Fine surface finish is in high demand in a wide spectrum of industrial applications. An internal magnetic abrasive
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Unit 3 Writing Assignment - Survey of the sciences Navigation Well pigeons and sea turtles are not the only creatures on this Earth to use a magnetic compass. But I found that sea turtles use inclination angle and intensity to follow certain routes in the ocean‚ they call these routes gyres. The gyre is known to be warm and have lots of food‚ but where the gyre is cold there is less food and turtles that follow these routes tend to die. Also a lot of these creatures tend to have a substance in
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electrical and electronic engineering. o Ferrite- These types of magnets magnets are made of a sintered composite of powdered iron oxide and barium/strontium carbonate ceramic. Because of the cheap prices of the materials and manufacturing methods‚ inexpensive magnets like this (or non- magnetized ferromagnetic cores‚ for use in electronic component such as radio antennas‚ for example) of different shapes can be easily mass produced. These magnets are non-corroding‚ but can be brittle and must be treated
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Interior-Permanent Magnet Synchronous Motors using Design Sensitivity Analysis Mohammadreza Hassan Zadeh1‚ Arash Kiyoumarsi2 1 Electrical Engineering Department‚ Abhar Islamic Azad University‚ Abhar‚ 22‚ Iran‚ phone: +98 281 3349816‚ e-mail: mrh_zadeh@qazviniau.ac.ir‚ 2 Electrical Engineering Department‚ Isfahan University Isfahan‚ Iran‚ Abstract. This paper presents a shape optimal design approach to reduce the torque ripple of the interior-permanent magnet synchronous motors
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Practice and Program Evaluation Chanyel Pitts Hendricks SOWK 6347 Evaluation of Social Work Practice with Hispanic Children and Families Our Lady of the Lake University Professor: Sam Choi Practice and Program Evaluations Practice and program evaluations play an imperative role within programs and organizations. A program purpose‚ mission‚ and intent are evaluated to explore the effectiveness and accountability based on the detailed expectations and outcomes. When analyzing the organization through
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Magnetic field screening and mirroring in graphene Mikito Koshino‚ Yasunori Arimura‚ and Tsuneya Ando arXiv:0903.1690v2 [cond-mat.mes-hall] 17 Jun 2009 Department of Physics‚ Tokyo Institute of Technology‚ Tokyo 152-8551‚ Japan (Dated: June 17‚ 2009) The orbital magnetism in spatially varying magnetic fields is studied in monolayer graphene within the effective mass approximation. We find that‚ unlike the conventional two-dimensional electron system‚ graphene with small Fermi wave number kF
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Review Questions 1. What is magnetism? 2. Torque is ________. 3. A magnetic field is _________. 4. True or False: A permanent magnet is a piece of material that has been magnetized and can hold its magnetic strength for a reasonable length of time. 5. How is an electromagnet produced? 6. Which of the following produces the best electromagnet? 7. Unlike poles of a magnet _________each other and like poles_________ each other. 8. What part does polarity play in the operation of an electric motor
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Although historically ancient travelers made abundant use of the earth’s magnetic field for the exploration of the earth‚ they were ignorant of its origin. In many respects the earth’s magnetic field exhibits characteristics similar to those of a bar magnet; nonetheless‚ the mechanisms responsible for generating each are vastly different. Magnetic field lines appear to originate near the south geographic pole‚ i.e. magnetic north pole‚ and terminate near the north geographic pole‚ i.e.
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Exploration: Magnetism Vocabulary: attract‚ bar magnet‚ ferromagnetic‚ magnetize‚ North Pole‚ repel‚ South Pole Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What happens when you place two magnets close together? It depends on the sides when the two North Pole sides are meant then they get pulled together. And if it should be the opposite way then they will move each other away. 2. What objects do magnets stick to? Make a list iron and steel‚ zinc‚ gold nickel
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