1. Atomic and Molecular Structure a. Students know how to relate the position of an element in the periodic table to its atomic number and atomic mass. The Periodic Table organizes elements by their atomic number - from hydrogen (1) to whatever is the highest one currently known (>105). It is arranged so that similiar members fall in a list such as Chlorine Bromine etc.. The average atomic weight is usually shown with each element‚ but due to isotopes (caused buy nuclear varations)
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Proteins are arguably the most important things that people know the least about. As OpenStax CNX puts it‚ “Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules”. Proteins are “Macromolecules that contain nitrogen as well as carbon‚ hydrogen‚ and oxygen”(Miller‚ Kenneth R.‚ and Joseph S. Levine 48). Macromolecules are exceedingly large molecules that can be made up of several lesser molecules called proteins.
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the periodic table‚ the halogens‚ all react with the alkali metals to form ionic compounds in which the halide ions have a single negative charge. f) An ionic compound is a giant structure of ions. Ionic compounds are held together by strong electrostatic forces of attraction between oppositely charged ions. These forces act in all directions in the lattice and this is called ionic bonding. g) When atoms share pairs of electrons‚ they form covalent bonds. These bonds between atoms are strong
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Early History of Electric Power Date Event Pictures 1800-1819 Early electric experiments were performed with DC. In 1800‚ Alessandro Volta published a description of a silver/zinc battery‚ acknowledging that he did not know how it worked. In 1807‚ Humphry Davy constructed a practical battery (the picture will be immediately familiar to anyone who works with UPS systems)‚ and demonstrated both incandescent and arc light. • Volta’s famous bi-metalic frog twitch (I did this one myself as a boy..
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disaster occurred on May 6‚ 1937. A German passenger airship LZ 129 Hindenburg caught fire and was engulfed while its attempt to dock at the Naval Air Station Lakehurst in Manchester Township‚ New Jersey‚ United States. The fire was ignited by an electrostatic discharge which sparked leaking hydrogen from the zeppelin. In order to make up for extra than 12 hours in its transatlantic flight‚ the Hindenburg passed via a weather front of excessive humidity and high electric charge. Even though the mooring
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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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