tragic of all‚ you have a bad hair day. These are all static electricity events - events that can only be explained by an understanding of the physics of electrostatics. Not only do electrostatic occurrences permeate the events of everyday life‚ without the forces associated with static electricity‚ life as we know it would be impossible. Electrostatic forces - both attractive and repulsive in nature - hold the world of atoms and molecules together in perfect balance. Without this electric force‚ material
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white or in full color. LASER JET PRINTER It produces high quality prints or graphics on paper. Color and black and white printing is available. It is based on the principle of electrostatic printing and photography wherein the source of ink is a toner. PLOTTER It comes in 2 types: pen plotter and electrostatic. Pen plotter is a vector graphics printing device which operates by moving a pen over the surface of paper. It is usually used for large printing requirements of CAD drawings of houses
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the sizes of atoms Content Outline for Physical Sciences Section of the MCAT © 2013 AAMC. May not be reproduced without permission. 2 BONDING A. The Ionic Bond (Electrostatic Forces Between Ions) 1. Electrostatic energy q1q2/r 2. Electrostatic energy lattice energy 3. Electrostatic force q1q2/r 2 B. The Covalent Bond 1. Sigma and pi bonds a. hybrid orbitals (sp3 ‚ sp2 ‚ sp‚ and respective geometries) b. valence shell
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each of the statements about noncovalent interactions is true or false. If false‚ change the statement so it is true a. Ionic bonds are the result of electrostatic attraction between two ionizes functional groups of opposite charge. b. Hydrogen bonds result from interaction of an anion with a hydrogen atom. c. Hydrophobic interactions are electrostatic attractions between nonpolar functional groups and water. d. H+ and OH- interact together by ionic bonding to form water. 2. Identify the type of bonding
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The design and modeling of microscale electro-mechanical systems (MEMS) is a unique engineering discipline. At small length scales‚ the design of resonators‚ gyroscopes‚ accelerometers‚ and actuators must consider the effects of several physical phenomena. MEMS devices and sensors may even utilize multiphysics phenomena for its very function or for increased sensitivity. To this end‚ the MEMS Module provides user interfaces for electromagnetic-structure‚ thermal-structure‚ or fluid-structure interactions
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(atoms‚ molecules or ions). They are weak compared to the intramolecular forces‚ the forces which keep a molecule together. There are a few types of attractive intermolecular forces such as: Dipole-Dipole Forces Dipole–dipole interactions are electrostatic interactions of permanent dipoles in molecules. These interactions tend to align the molecules to increase the attraction (reducing potential energy). The positive end of a polar molecule will attract the negative end of the other molecule and
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Bonds is something that retains and holds on together with one another. There are three major chemical bonds and they are‚ Ionic‚ Covalent‚ and Hydrogen bonds. An example of a covalent bond would be SCl^2 which is Sulfur dichloride. SCl^2 is a covalent bond because since they are close to each other in valence electrons‚ they have almost full outer shells so they share electrons with one another. A good example is table salt NaCl‚ because they are on opposite sides of the periodic table therefore
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Customers today demand higher quality and durability from the products they buy. Not only do they expect these products to perform well‚ but they want the finish to look good and resist corrosion for a much longer period of time. Powder coating is different from painting. There are no liquids or solvents. Therefore‚ it is the ultimate coating for environmental friendliness. Being dry‚ the powder overspray can be reclaimed for very high application efficiency. It uses heat to convert its state from
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and; • Covalent network substances Metallic substances are substances that are made up of one or more metal. They have regular 3D lattice of positively charged ions. Metallic substances are bond together by metallic bond which has strong electrostatic attraction between the positive ions and the delocalised electrons. These delocalised electrons carry current giving metallic substance the ability to conduct electricity in solid or liquid form. Metallic substances are insoluble in water. Because
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ELECTROSTATICS The Gauss law in electrostatics describes that “the total normal electric flux (Ф) over a closed surface in an electric field (E) is equal to 1/ε0 times the total charge (Q) enclosed by that surface.” Mathematically it may be expressed as‚ ϕ= Q/ε
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