produced when radio stations broadcast? Include a description of what is producing the signal as well as the reasoning behind how this could produce a signal. We know that electromagnetic radiation is produced by accelerating charges. In the radio transmitter‚ electrons oscillate up and down and are thus accelerating. An electron will exert a force on another electron when they are some distance away‚ like charges repel. When the electron in the transmitter oscillates up and down‚ the direction of
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BANK OF AMERICA’S MASTERNET SYSTEM: A CASE STUDY IN RISK ASSESSMENT By Jeffery G. Szilagyi Abstract In 1982‚ Bank of America initiated the development of the Master Net trust accounting system. After $78 million in losses on the project‚ the bank announced in 1988 that its trust business was being given to a subsidiary because it could no longer handle the operational requirements. MasterNet quickly became known within the information system industry as a classic case of a system that had fallen
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matter. Electricity is the force that holds together the molecules and atoms of all substances. The type of electricity that is most familiar to us is electrical current. This is the flow of electrical charges through a substance called a conductor such as a metal wire. This flow happens beacuse some of the negatively charge electrons circling the nuclei of the conductor’s are held loosely. The electrons can move from one atom to the next‚ producing and electrical current. Electricity has become
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With Undoped Silicon Nanowires Massimo Mongillo‚1‚ a) Panayotis Spathis‚1‚ b) Georgios Katsaros‚1 Pascal Gentile‚2 and Silvano De Franceschi1 1) SPSMS/LaTEQS‚ CEA-INAC/UJF-Grenoble 1‚ 17 Rue des Martyrs‚ 38054 Grenoble Cedex 9‚ France 2) SP2M/SINAPS‚ CEA-INAC/UJF-Grenoble 1‚ 17 Rue des Martyrs‚ 38054 Grenoble Cedex 9‚ France arXiv:1208.1465v1 [cond-mat.mes-hall] 7 Aug 2012 We report on the electronic transport properties of multiple-gate devices fabricated from undoped silicon nanowires.
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In the past benzene was obtained from the distillation of coal in the absence of air. Today most benzene is made syntheticallyfrom petroleum products. The benzene is a closed ring of six atoms connected by bonds that resonatebetween single and double bonds; each carbon is also bound to a single atom. Benzene isinsoluble in water but mixes in all proportions with organic . Benzene is itself an excellentsolvent for certain and for most simple organic chemicals. It is one of the most commonly
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Atoms Atom is the fundamental building block of all stuff‚ or what scientists like to call "matter". An individual atom is very small. In fact‚ the smallest type of atom‚ hydrogen‚ has a diameter of 10-8 cm. Every single object is composed of atoms. Our body is made up of many‚ many individual atoms. There are also many different types of atom. These different types are called elements. Examples of some elements are hydrogen‚ oxygen‚ and helium. Under normal conditions many atoms can stick together
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force is caused by electric charge. Electric charge is a property of the bits of matter within atoms. Electric force can cause matter to attract or repel because there are two kinds of charge – positive and negative charge. The effects of electric force can be summarized as the law of electric charge: Pieces of matter with the same kind of charge repel each other. Pieces of matter with the same kind of charge attract each other. 2 objects with a positive charge repel each other‚ as do 2 objects
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Beyond Silicon Computing DNA Computers: Ever since scientists discovered that conventional silicon-based computers have an upper limit in terms of speed‚ they have been searching for alternate media with which to solve computational problems. That search has led us‚ among other places‚ to DNA. The advantage of DNA is that it is tiny‚ cheap‚ and can react faster than silicon. Since this fledgling field is only eight years old‚ it is difficult to guess at this stage what applications it may
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The German scientist‚ Julius Scheiner was most likely the first person to realise there was a possibility of silicon being a basis of life. This idea was then grapsed by the british scientist James Reynolds in 1893. he then pointed out that its molecular integrity withheld in high temperatures which might allow life to exist at very high temperatures. Silicon seems promising when it comes to being the basis of life‚ but when the topic is researched futher. Carbon‚ when it is oxidized during the
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are composed of two atoms that form molecules. A chemical bond is created when two atoms share an electron. Also called covalent bond because they share valence electrons. A covalent bond‚ which is the strongest bond‚ takes action when two atoms valence overlap. For example‚ there are two suns and the light that shines from the two solid spheres forms many rays making a radiant cloud around each of the two. If these suns move closer together the radiant shine would be the valence. The closer they
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