chap320 - PHYS 1302 Introductory General Physics II Chapter...

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1 PHYS 1302 Introductory General Physics II Chapter 32:Nuclear Physics
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8/4/09 PHYS 1302 Chapter 32 12-2 Nuclear Physics s Systematics (mass, size, composition etc.) of atomic nuclei s Isotopes s Radioactivity s Decay Law s Carbon-14 dating s Nuclear reactions (fission and fusion) s Dosiemetry
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8/4/09 PHYS 1302 Chapter 32 12-3 Constituents and structure of an atom r atom 0.05 nm 10 - 10 m r nucleus 10 - 15 m 1 fm
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8/4/09 PHYS 1302 Chapter 32 12-4 Constituents and structure of nuclei Z Atomic number=number of protons in nucleus N Neutron number=number of neutrons in the nucleus A Mass number=number of nucleons in nucleus (Z+N) Q p =+e Q n =0
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8/4/09 PHYS 1302 Chapter 32 12-5 Symbol for a nucleus Z A X X Chemical symbol for the element e.g., 6 12 C Isotopes : Nuclei with same Z (same chemical properties) and different N (different masses). For example, there are several isotopes of carbon: 6 12 C, 6 13 C, 6 14 C Isotopes are good biological and chemical tracers.
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8/4/09 PHYS 1302 Chapter 32 12-6 The unified atomic mass unit (u) 1 u = 1.660540 × 10 -27 kg Definition: The mass of a 6 12 C atom is exactly 12 u 1 u m proton = 1.67265 × 10 -27 kg m p = 1.007276 u m n = 1.008664 u m e = 0.0005485799 u
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This note was uploaded on 04/10/2010 for the course PHYS 1102 taught by Professor Lau during the Spring '10 term at Houston Baptist.

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chap320 - PHYS 1302 Introductory General Physics II Chapter...

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