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Homework Help: Help with decay question

  1. Sep 11, 2009 #1
    1. The problem statement, all variables and given/known data
    Given Y=Ae-t/(lambda) find the half life in terms of A and lambd

    2. Relevant equations
    Im not sure if my teacher accidentally wrote lambda instead of tau, because some websites i have visited has done Ae-t times lambda, or Ae-t/(tau), if this is the case tell me.
    Im also not sure if t(1/2)=ln2/lambda or ln2 *lambda. please clear my confuses and help me on problem (1).!
  2. jcsd
  3. Sep 11, 2009 #2


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    Homework Helper

    Welcome to PF!

    Hi fuzzybear! Welcome to PF! :smile:

    (have a tau: τ and a lambda: λ and try using the X2 tag just above the Reply box :wink:)
    τ is a time, and λ is a one-over-time …

    see the PF Library page on https://www.physicsforums.com/library.php?do=view_item&itemid=193" for more detail. :wink:
    Last edited by a moderator: Apr 24, 2017
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