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The ultimate stage occurs when an enormous star begins making iron. Given that iron nuclei are more tightly sure than any heavier nuclei, any fusion further than iron would not develop a Web release of Electrical power.[96]a : a all-natural luminous body noticeable while in the sky In particular during the night b : a self-luminous gaseous spheroid

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As mentioned above, concrete is rather robust in compression, but weak in rigidity. Much larger earthquakes can deliver extremely massive shear loads on buildings. These shear hundreds matter the construction to both of those tensile and compressional loads. Concrete structures without reinforcement, like other unreinforced masonry constructions, c

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