PHYSIC QUESTION!plz help!

• RK2029

  23 Sep 06, 00:22

  The step above is the simplest liao..
• Scape_Goat_Token

  23 Sep 06, 07:57

  nid so mani step 4 wad.
  
  can do it mentally wad
• Darkness_hacker99

  23 Sep 06, 19:39

  Originally posted by freedom4ever:

  lol. you teaching the wrong thing.
  half life of 4 years not 1 year.

  Shhhh. dont tell other people that I'm a Biology student.
• SilverRevo

  23 Sep 06, 20:53

  why do I see area of circle and summation equations ..
  
  diao ... 12 years / 4 is 3 halflife
  
  1/2^3 x 320.
  40g lor ... 1 mark question at O levels.