the Bohr Model which depicts the atom as a small‚ positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus that seemed to have a similar structure to the solar system‚ but with attraction provided by electrostatic forces instead of gravity. The Bohr Model has been put to rest‚ but the quantum theory remains sound. The Bohr model was a primitive version of the Hydrogen atom. The Bohr model is still commonly taught to introduce students to quantum mechanics
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Coulomb’s Law Purpose: The purpose of this lab was to demonstrate that the force between two stationary charges is directly proportional to the product of the charges and inversely to the square of the distance between them. Coulomb’s law tells us that the force between two charges depends (1) linearly on the strength of each charge‚ and (2) inversely on the square of the distance between them. Mathematically we would write this as . Procedures Part1 Begin by removing the right side
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object] Potential energy = (mass) (height) (gravity = 9.8m/s squared) A force is any kind of push or pull exerted on an object. Kinetic energy can get converted into potential energy or vice-versa. Electrostatic Potential energy rises from the interactions between charged particles. Electrostatic Potential energy = (k (Q1) Q2))/ D Q1 and Q2 are usually the order of magnitude of charge on an electron (1.6 x 10 to the power negative 19) Chemical energy of substances if due to the potential energy
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Coal handling plant in a thermal power generating station coal Hand e ling Mine /Plant in a the rmal p o we r g e ne rating s tatio n Introduction to Coal handling plant In a coal based thermal power plant‚ the initial process in the power generation is “Coal Handling”. So in this article i will discuss the overall processes carried out at a Coal Handling plant in a coal based thermal power generating station. T he huge amount of coal is usually supplied through railways. A railway siding line
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of 1 (V is the V accelerating potential) for two particles having the same charge. Which of the two represents the particle of heavier mass? 10. Write down the function of (i) transducer and (ii) antenna? 11. State Coulomb’s law in electrostatics. The electrostatic force between two charges of 200 µC and 500 µC placed in free space is 5 gf. Find the distance between the two charges. (g = 10 m/s2) 12. Derive an expression for the electric current in terms of drift velocity. How the drift velocity
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they generated 10. Distinguish between biodegradable and non biodegradable waste 11. What are the three r’s in waste management 12. What is incineration? 13. Name three sources of bio- medical waste. 14. What is the use of electrostatic precipitators 15. How are effluents treated 16. What is waste management ? Why is it necessary. 17. What is e waste? How is it hazardous? 18. What is composting ? explain 19. Distinguish between aerobic and anerobic composting
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characteristics of metals but more like nonmetals. Lesson 03.03 Predict the properties of an element based on the patterns of the periodic table. Lesson 3.04 Define ionic and covalent bonding. Ionic Bond: A chemical bond that results from electrostatic attraction between positive and negative ions. Covalent Bond: A chemical bond in which electrons are shared between two atoms. Relate knowledge of the periodic trends to chemical bonding.
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When it comes to providing a state-of-the-art‚ durable metal coating‚ there is no better option than powder coating. This unique process can protect vehicles‚ buildings and even smaller items such as patio furniture. So how does the powder coating process work? The experts at Powder Vision‚ Inc. in Issaquah‚ WA offer an inside look at their unique work process. Part Preparation: The first step to a successful powder coating is to remove dirt‚ oil and other contaminants from the parts that will be
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Lesson 3.01: History of the Periodic Table 1. Explain how scientific observations led to the development of‚ and changes to‚ the periodic table. Dmitri Mendeleev- first periodic table‚ organized 63 known elements according to properties‚ organized into rows and columns. He wrote names‚ mass and chemical properties on each. Julius lothar Meyer- independently worked in German ‚ similar to Mendeleev Henry Gwyn Jeffrey’s Moseley: worked with Ernest Rutherford experimented with 38 metals‚ he found that
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Law of definite composition states that the elements in a given compound are always combined in the ssame proportion by mass. This law form the basis for the definition of a chemical compound. For example‚ oxygen makes up 8/9 of the mass of any sample of pure water‚ while hydrogen makes up the remaining 1/9 of the mass. formation of water and hydrogen peroxide ‚ carbon dioxide and carbon monoxide are the big examples of law of definite proportion. example Law of Multiple Proportions Problem-Law
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