Chapter 1: Physics and Measurement 1. The standard kilogram is a platinum-iridium cylinder 39.0 mm in height and 39.0 mm in diameter. What is the density of the material? 2. Two spheres are cut from a certain uniform rock. One has radius 4.50 cm. The mass of the other is five times greater. Find its radius. 3. Calculate the mass of an atom of (a) helium‚ (b) iron‚ and (c) lead. Give your answers in grams. The atomic masses of these atoms are 4.00 u‚ 55.9 u‚ and 207 u‚ respectively
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Communication Satellites Introduction Communications Satellites have been around since 1958. A communications satellite is a spacecraft that orbits the Earth and relays messages‚ radio‚ telephone and television signals. Stations on the ground‚ called earth stations‚ transmit signals to the satellite‚ which then relays the signal to other earth stations. As a newer form of communications‚ communications satellites are very useful in bringing the people in the world together. Communications between
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1. Hydrogen Name: Hydrogen Atomic number: 1 Atomic Weight: 1.00794 grams/mole Standard state: gas at 198 K Hydrogen is the lightest Hydrogen is the lightest element. It is by far the most abundant element in the universe and makes up above 90% of Universe by weight. Hydrogen as water (H2O) is absolutely essential to life and it is present in all organic compounds. Hydrogen is lightest gas. Hydrogen gas was used in lighter-than-air balloons for transport but is far too dangerous because
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Transition Metals are: Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Yttrium Zirconium Platinum Gold Mercury Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Ununbium Niobium Iridium Darmstadtium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Hafnium Tantalum Tungsten Rhenium Osmium Elements classified as Other Metals The 7 elements
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The Cretaceous Period and the Aftermath Imagine a great‚ thickly muscled dinosaur. Got it? See those serrated teeth? And the great yellow eye that is pondering whether you are food or foe? Now‚ imagine something that can kill this beast and all of its kind. This “something” is called the Cretaceous Tertiary Extinction event‚ and it occurred 65.5 million years ago‚ and killed all the dinosaurs‚ and affected the process of evolution forever afterward. The Cretaceous
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Introduction Limited Liability Company (LLC) is often considered as the hybrids of general partnership and corporation. It often referred as a general partnership where the partners have no personal liability and a limited partnership where there is no general partner or a partnership surrounded by a corporate shell (Seipel‚ Tunnell & Zimmermann‚ 1995). The LLC is first adopted in Wyoming in 1977 and then in Florida in 1982. However‚ LLCs weren’t popular entities in the beginning due to
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BIO FINAL Cells label organelles (nucleous‚ dna‚ chromatid‚ robosomes ‚proteins in rough er in ribosomes stroma is liquid in between thylacoid membrane Chemestry Know essential elements for plants and animals. PH= the negative log of H+ ion concentration in water. Equation. Subtract from 14 Mitosis divides the nucleous 4 phases: prophase: chromosomes condense metatphase: line up on eqator anaphase: pull apart telephases: nuclear membrane
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Levels of Product Differentiation in the Global Mobile Phones Market The sixth product level called compliant product is a connecting element between the physical product characteristics and the strategy of the producer company Stanimir Andonov* The article discusses the differentiation among the product offers of companies working in the global markets‚ as well as the strategies which they use and could use in that respect. The main idea of the paper is that the principle “differentiate or
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