Static electricity: electric charge that builds up on the surface of an object Friction: is the force resisting the relative motion of two surfaces in contact When two objects are rubbed together there is more contact between the surfaces and so more electrons are transferred Electron Affinity: Electron affinity is the tendency of a substance to hold onto electrons. Items high on the list (electrostatic/ triboelectric series) will tend to lose electrons easily (positive) Items low on the list
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CONDUCTORS A conductor is an object or type of material which permits the flow of electric charges in one or more directions. For example‚ a wire is an electrical conductor that can carry electricity along its length. Physics All conductors contain electrical charges‚ which will move when an electric potential difference (measured in volts) is applied across separate points on the material. This flow of charge (measured in amperes) is what is meant by electric current. In most materials‚ the direct
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Ion Exchange Chromatography Week 10 TAG Question 1: Chapter 6-4 of your technique book provides a detailed description of how to run a ion- exchange column. Assume you have a cation-exchange column already prepared and ready to use. Create an outline of no more than 10 steps describing how you will regenerate the column‚ load your sample and collect the hydronium ion released. 1. Open the stopcock at the bottom of the column and allow solution to drain out until the solution level in the
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to: Define capacitance Use the capacitance formula Determine capacitance of parallel 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
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Model of the Atom 1. In 1911 Rutherford proposed the nuclear model of atomic structure. He suggested that an atom consists of a central nucleus (where most of the mass of the atom is concentrated) having a positive charge‚ surrounded by moving electrons carrying negative charge. Geiger and Marsden carried out an experiment to verify his proposal. The Geiger/Marsden a Particle Scattering Experiment 1. The apparatus is illustrated in the diagram below. | 2. The apparatus was in an evacuated
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Name: Nithin Santosh Tutioral group: T3 HW ID: H00202862 TUTORIAL TASK III TASK ONE (a) Stabilization of a mobile robot climbing stairs - This text is an Academic writing because it shows the background of the topic and shows the machine is capable of overcoming obstacles. Advanced driver assistance systems mushroom - This text is a newspaper article because the word ‘mushroom’ here is used as a metaphor
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Jessica R. London Colorado Technical University Online How To Work Your GPS Unit Before we place your unit on you‚ we will go over how to charge it and listen to messages. Your unit does have to be charged at least two hours a day. You can charge it an hour in the morning an hour at night. You can break it up into 30 minute intervals‚ as long as you charge it a minimum of two hours a day. You can never overcharge just don’t undercharge it. First‚ you are going to plug in the power supply into
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INSTRUCTIONS 1. Answer All Questions. 2. All questions carry equal marks QUESTION ONE Bahati and three of his friends recently retired from the civil service under the voluntary retirement scheme. They intend taking advantage of the on-going structured adjustment programmes (SAPS) by going into business. a) Advise them on the procedures they have to follow in order to register a public company limited by shares. (8 Marks) b) Explain how the procedures
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Lewis Structure Review How To Write Lewis Structures 1. Determine the total number of valence electrons from all of the atoms in the molecule or ion. • Add one electron for each unit of negative charge. • Subtract one electron for each positive charge. 2. Write the correct skeletal structure. • For molecules of the formula ABn‚ place the least electronegative element in the center‚ and the more electronegative elements in the terminal positions. • H is always a terminal atom‚ and NEVER a central
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defined as the force that would be exerted on a positive test charge of 1 coulomb placed at that point; the direction of the field is given by the direction of that force. Electric fields contain electrical energy with energy density proportional to the square of the field amplitude. The electric field is to charge as gravitational acceleration is to mass and force density is to volume. 1. Suppose that two point charges‚ each with a charge of +1.00 Coulomb are separated by a distance of 1.00 meter
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