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    and metal. They also generally have high densities‚ slow rotation‚ solid surfaces‚ no rings‚ and few satellites. These planets include Mercury‚ Venus‚ Earth‚ and Mars. On the other hand‚ the jovian planets are composed primarily of hydrogen and helium. They generally have low densities‚ rapid rotation‚ deep atmospheres‚ rings‚ and numerous satellites. These planets include Jupiter‚ Saturn‚ Uranus‚ and Neptune. The closest terrestrial planet to the sun is Mercury. Mercury is relatively small

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    deeper than you are likely to dive at. You will find watches here with ratings as high as 1000 meters for professional scuba diving. Some also feature helium release valves - a one-way pressure relief valve typically consisting of a strong spring‚ a plug‚ and a good rubber gasket. The helium valve prevents damage to the watch due to the buildup of helium gas in the watch after extended stays inside the dry pressurized habitats used for commercial diving. Seiko divers Seiko watches are powered by the

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    Model of MacGregor.[10] Consistency between models[edit] Main article: Nuclear structure[->0] As with the case of superfluid[->1] liquid helium[->2]‚ atomic nuclei are an example of a state in which both (1) "ordinary" particle physical rules for volume and (2) non-intuitive quantum mechanical rules for a wave-like nature apply. In superfluid helium‚ the helium atoms have volume‚ and essentially "touch" each other‚ yet at the same time exhibit strange bulk properties‚ consistent with a Bose–Einstein

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    by nuclear fusion in their cores‚ mostly converting hydrogen into helium (Fusion in Stars‚ 2012). The production of new elements by nuclear reactions is called nucleosynthesis. A star ’s mass determines what type of nucleosynthesis occurs during explosive changes in its life cycles (Fusion in Stars‚ 2012). Nuclear Reactions The smallest stars only convert hydrogen into helium. Medium stars‚ such as our Sun‚ can convert helium into oxygen and carbon. Both small stars and medium stars are considered

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    Ionic Analysis Lab

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    Purpose: The purpose of this lab was to analyze the trends of the atomic radius (AR) and the first ionization energy (IE) for the first 36 elements of the periodic table. Procedure: A piece of graph paper was given out by the teacher. A periodic table that has the atomic number‚ atomic radius (AR)‚ and first ionization energy (IE) was given out by the teacher. A sheet of paper was taken out to record the elements‚ atomic number‚ atomic radius (AR)‚ and the first ionization energy (IE). To record

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    Science of Stars

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    The article discusses the basic concepts of stars and some basic facts of astronomy the importance of the article that it shows how by using the spectroscopy technique we can determine the interaction between matter and radiated energy and discover that some objects give off and adsorb different spectrum of light. The article makes you understand the different stages of the lifecycle of the sun. Astronomers study light which comes from distant objects to determine its composition‚ temperature‚

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    the bottom was painted with a top coat of reflection “dope” paint to fool the people below. Inside the Hindenburg‚ there were 16 gas filled pockets. These pockets were filled with hydrogen instead of helium because it is less dense than Helium. (Side note: The fact that hydrogen is less dense than helium is proven because of Avogadro. He stated that if you have two different gases at the same pressure and the same temperature then they would have the same amount of particles. But then that would lead

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    Astr 100 Exam 2

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    terrestial (inner) vs. jovian planets (outer) * Closer to sun * Smaller sizes and masses * High densities * Rock and metal vs. hydrogen and helium ices * Solid surface vs. none * Warmer surfaces vs. cold temps at cloud tops * Few moons * No rings * SUN = hydrogen and helium * Earth travels around the sun at an average distance of about 149‚600‚000 kilometers (92 million miles) * The sun’s diameter is about 1.4 million km (864

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    Gas Tungsten Arc Welding

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    Arc Welding‚ also known as Tungsten Inert Gas Welding‚ is an arc welding process that uses a non-consumable tungsten electrode to produce a weld. The weld area is protected from atmospheric contamination by an inert shielding gas‚ such as argon or helium‚ and filler metal is normally used‚ except in autogenous welds. A constant-current welding power supply produces energy which is conducted across the arc through a column of highly ionized gas and metal vapors known as a plasma. GTAW is most commonly

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    Other material and particles which collided and stuck together formed asteroids‚ comets‚ planets and moons. The solar wind from the sun attracted all the lighter particles such as helium and hydrogen from the inner solar system planets. However‚ the out solar system had planets with an abundant prescene of hydrogen and helium. Inner Solar System The four smaller and inner planets in our solar system - Mercury‚ Venus‚ Earth and Mars - they are most made up of rock and metals (iron). These four planets

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