one such impact did in the dinosaurs‚ but evidence for large collisions coincident with other mass extinctions remained elusive until recently.”The increased attention brought about the discovery including extraterrestrial fullerenes found in the Graphite Peak boundary layer. They trap extraterrestrial gases in space and travel to the earth in the meteor. Long before the dinosaurs ever lived‚ the planet experienced a mass extinction so severe
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The artist I had chosen for my PowerPoint presentation was Georgia O’Keeffe. The first example of her work is Easter Sunrise was made in 1953 and is an oil on canvas painting. Easter Sunrise depicts a mountain side and shining from the corner of the mountain is a brilliant white cross. As far as the technical excellence of this painting‚ the colors are varying degrees of browns‚ gold and white. Georgia O’Keeffe uses form really well. Even though she uses one mountain as the main focus‚ in the
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3 Dimensional Carbon Nanotube for Li-Ion Battery Anode (Journal of Power Sources 219 (2012) 364-370) Chiwon Kang1‡‚ Indranil Lahiri1‡‚ Rangasamy Baskaran2‚ Won-Gi Kim2‚ Yang-Kook Sun2‚ Wonbong Choi1‚ 3* 1Nanomaterials and Device Laboratory‚ Department of Mechanical and Materials Engineering‚ Florida International University; 10555 West Flagler Street‚ Miami‚ FL 33174‚ USA 2Department of Energy Engineering‚ Hanyang University; 17 Haengdang-dong
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[intramolecular bonds] Why do metals conduct electricity? How are polymers classified: What is nanoscience? Thermosetting: Thermosoftening: Why can ionic compounds conduct electricity when molten or dissolved in water? GIANT COVALENT SUBSTANCES Why is graphite slippery and conduct electricity? KEY WORDS: Giant ionic structures Intermolecular forces Macromolecules Fullerenes Shape memory alloys Polymers Thermosetting / Thermosoftening Nanoscience ASSESSMENT:
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Chernobyl Paper The nuclear disaster that happened at the Chernobyl power plant was one of the most catastrophic nuclear accidents that the world had ever seen. It left the world shocked and scarred. The event occurred on April 26‚ 1986 at 1:23 a.m. at Chernobyl near the city of Pripyat in Ukraine (former USSR). Reactor number four at the power plant had a massive power surge that caused the reactor to blow up. As a result to the explosion‚ very dangerous amounts of lethal radiation were spread
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as connecting wire? An element X on burring in air form an oxide Xo 2 which when dissolved in water turns blue litmus red. Identify if X is a metal or non – metal Justify your answer? What is the cause of resistance offered by a conductor? How is graphite used in lead Pencils Other Educational Portals http://cbseadda.blogspot.com/
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A fishing pole is a simple pole or stick for suspending a line‚ with a hooked fish lure or bait. A fishing rod refers to a more sophisticated casting tool fitted with a line stowage. The fishing rod is a pole that are now made of fiberglass‚ graphite‚ and boron they also come in various thickness and
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used as a quick way of graphically demonstrating an image‚ idea or principle. Sketching is generally a prescribed part of the studies of art students. The term "sketch" has most often been applied to graphic work executed in a dry media such as graphite pencil‚ charcoal or pastel. It may also apply to drawings executed in pen and ink‚ ballpoint pen‚ water colour and oil paint. The latter two are generally referred to as "water colour sketches" and "oil sketches". A sculptor might model three-dimensional
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guess paper 1. Express the rate of following reaction in terms of disappearance of hydrogen in the reaction. 3H2(g) + N2(g) 2NH3(g) 2. What is peptisation? 3. Write Reimer Tiemann reaction. 4. Why is CO stronger ligand that Cl-. 5. Write structure of 2-(2-Bromophenyl)butane. 6. Complete the reaction C6H6+R COCl 7. Why pentahalides more covalent than trihalides? 8. What is difference between nucleoside and nucleotide? 9. Explain the following- (a) Gattermann Koch
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Law of Refraction- by Aydar Z. Hypothesis: During investigation‚ student will calculate 2 sets of Angles of Incidence & Refraction. The Hypothesis is that 2 outer angles would have very similar values (1st angle of Incidence and 2nd angle of Refraction)‚ while 2 inner angles will also have similar values (2nd angle of Incidence and 1st angle of Refraction). This Hypothesis is based on earlier test investigations where outer angles were very similar in a range of 3 degrees and inner angles were very
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