Summary

• Binding energy of the nucleus
• Exponential decay

• Class quiz
  
  
• Radioactive dating
  • applying exponential decay
  • carbon-14 dating
  • other dating methods
    Example #1
  
  
• Nuclear applications
  • fission applet
  • fusion
  • radiation therapy
    • CT scans
    • emission tomography
    • NMR and MRI
    • neutron beam therapy
  
  
  
  
  

gc6 30.18
How much energy is released when tritium, , decays by β^- emission? See Appendix B.
A. 2809 MeV                B. 931.5 MeV
C. 18.6 keV                   D. 20 eV
Answer







kw5
If the ratio of ¹⁴C to ¹²C in a piece of bone is only 1/8 of the atmospheric ratio, how old is the bone? The half-life of ¹⁴C is 5730 years.
A. 716 y                    B. 22,920 y
C. 17,200 y               D. 45,800 y
Answer







 



C. 18.6 keV













 



C. 17,200 y