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Category:	Science
Word Count:	526
Featured Papers from DirectEssays 1. Nuclear Power 2. nuclear energy 3. The Impacts of Chernobyl Nuclear Accident in the US 4. Nuclear Power 5. Nuclear Energy

	nuclear energy in US
	.When a U-235 atom splits, it gives off two or three neutrons (depending on the way the atom splits). If there are no other U-235 atoms in the area, then those free neutrons fly off into space as neutron rays. If the U-235 atom is part of a mass of uranium -- so there are other U-235 atoms nearby -- then one of three things happens: If, on average, exactly one of the free neutrons from each fission hits another U-235 nucleus and causes it to split, then the mass of uranium is said to be critic

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nuclear energy in US