Half Life and Applications by Alka Rhode https://padlet.com/arhode5/lfmy5izepqg6c30y Atomic Physics en-us 2022-05-07 22:31:51 UTC 2025-12-21 00:47:43 UTC hello@padlet.com 1) Define Half Life arhode5 https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174096198 2022-05-07 22:33:14 UTC https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174096198 2) From the passage answer a) How is C 14 produced initially in atmosphere from Nitrogen? Write equation b) What radiation is produced when C 14 decays into Nitrogen. Write the equation. c) Explain how half life of C 14 help us know the age of the fossil? arhode5 https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174100826 2022-05-07 22:47:47 UTC https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174100826 3) From the half life graph showing disintegrating rate a) What is the the half life of the substance in the graph. b) Explain how you did you get this answer arhode5 https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174109794 2022-05-07 23:16:04 UTC https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174109794 4) The content of a radioactive substance is 10g. Its half life is 2 years. a) After how many half lives would 1 g of unstable mass be left? b) Determine the approximate total mass of the contents 10 years later. Explain your answer. arhode5 https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174111857 2022-05-07 23:20:55 UTC https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174111857 5) After 5000 years, the 20 g of Radon has very nearly completely decayed. Plot at least two more half-lives and continue the graph line to show the decay curve up to a period of 5000 years. arhode5 https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174114214 This question is tricky - 5000 years is not the half life. The substance completely decays in 5000 years - which is 5 half lives. Therefore what is the half life? Start from there and draw the graph in your book ]]> 2022-05-07 23:29:17 UTC https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174114214 6) Why should the half life of a radioactive drug injected into the body to scan be very small? Refer to Slide 8 and 9 of power point on carbon 14 dating and half life arhode5 https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174116390 2022-05-07 23:37:47 UTC https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174116390 7) Why should the half life of Americium used to produce alpha particle in smoke detector be very long? Explain in details arhode5 https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174116754 2022-05-07 23:39:11 UTC https://padlet.com/arhode5/lfmy5izepqg6c30y/wish/2174116754