temperature‚ Hydrogen nuclei start to fuse together to form Helium and the star begins to release energy. This energy radiation production prevents further contraction of the star. It is now Main Sequence Star so it settles to an almost constant luminosity and temperature. The nearest main sequence star to Earth is the Sun. A star of one solar mass remains in main sequence for about 10 billion years‚ until all of the hydrogen has fused to form helium. Large main sequence stars have large gravitational forces
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Ocean Park‚ situated on the southern side of Hong Kong Island‚ is Hong Kong’s premier educational theme park. The current park covers more than 870‚000 square metres of land and features a diverse selection of world-class marine attractions‚ thrill rides and shows divided between three areas: Lowland‚ Headland and Tai Shue Wan. Operated by the Ocean Park Corporation‚ a statutory board‚ it is a not-for-profit organization that aims to provide elements of entertainment‚ education and conservation at
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atmosphere are hydrogen (82.5%)‚ helium (15.2%)‚ and methane (〖CH〗_4)(2.3%). Uranus appears to be greenish-blue because methane absorbs longer wavelengths of visible light. So when sunlight strikes the methane‚ the upper atmosphere loses it colors of red and yellow. Uranus’s atmosphere lacks water. The three main elements of Neptune’s atmosphere are the same as Uranus’s atmosphere‚ but the percentages are different. For Neptune hydrogen makes up 79%‚ helium 18%‚ and methane 3% of the atmosphere
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10. Briefly explain how the nuclear fusion of hydrogen to helium produces energy. Be sure to include E=mc2in your response. In the equation‚ E=mc2‚ E represents energy (in joules)‚ m represents mass (in kilograms)‚ and c2is the speed of light squared. c2can be thought of as a conversion factor between mass and energy. Since cis such a large number‚ c2is even larger. This means that the tiny amount of mass in hydrogen and helium particles‚ multiplied by the large c value‚ results in an enormous
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and the only difference is the radiation created by the decaying of it (Tritium | Radiation Protection | EPA). It is also easier for tritium to combine with any other lighter elements than normal hydrogen (protium). Tritium when decay become Helium-3‚ Helium with mass number 3. This happens when tritium breaks one of its
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representative elements that this method doesn’t work for is group 0. Those elements certainly have more than 0 valence electrons; in fact‚ all of them except for helium have 8 valence electrons. Why doesn’t helium have 8 valence electrons? Think for a moment about how many electrons helium has - it has a total of only two electrons‚ so helium only has 2 valence electrons. So generally speaking‚ the number of valence electrons stays the same as you go up or down a group‚ but they increase as you go
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PHYSICS 1 FAP0015 Questions & Answers to Physics I Assignments Chapter 1 11. What‚ roughly‚ is the percent uncertainty in the volume of a spherical beach ball whose radius is r = 2.86 ± 0.09 m? Answer: To find the approximate uncertainty in the volume‚ calculate the volume for the specified radius‚ the minimum radius‚ and the maximum radius. Subtract the extreme volumes. The uncertainty in the volume is then half this variation in volume. 3 Vspecified = 4 π rspecified = 4 π ( 2.86 m ) = 9
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hydrogen and helium with small amounts of water droplets‚ ice crystals‚ ammonia crystals‚ and other elements. Clouds of these elements create shades of white‚ orange‚ brown and red. Saturn is also a giant gas planet with an outer atmosphere that is mostly hydrogen and helium. Its atmosphere has traces of ammonia‚ phosphine‚ water vapor‚ and hydrocarbons giving it a yellowish-brown color. Uranus is a gas planet which has a lot of methane gas mixed in with its mainly hydrogen and helium atmosphere
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French Revolution."Helium. N.p.‚ n.d. Web. Curtis‚ Jerry. "Effects of the French Revolution."Helium. N.p.‚ n.d. Web. Mercadante‚ Michael. "Effects of the French Revolution."Helium. N.p.‚ n.d. Web. Browne‚ Anthony. “The Atrocity that is the French Revolution."Helium. N.p.‚ n.d. Web. "French Revolution Reign of Terror: Truly Necessary?." A Look at our World. N.p.‚ 04 dec 2007. Web. Perez‚ Catherine. “Napoleon Bonaparte: The public sentiment towards the rule of Napoleon in France.”Helium. N.p.‚ n.d. Web
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Question 1 | 1.61 points | Save | | You are standing on a scale in an elevator. Suddenly you notice your weight decreases. What do you conclude? | | | | | | | | The elevator is accelerating downwards. | | | The elevator is moving at a constant velocity downwards. | | | The elevator is moving at a constant velocity upwards. | | | Your diet is working. | | | The elevator is accelerating upwards. | | | | | | Question 2 | 1.61 points | Save | | Tidal
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