1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Rearranging an Energy Decay Equation

  1. Feb 11, 2010 #1
    Hi, I'm having trouble rearranging this equation, solving for E(t):

    E(t) = Eo*e^(-t/T)

    My attempt:

    ln E(t) = Eo * (-t/T) and now I'm stuck.

    Any help would be appreciated!
  2. jcsd
  3. Feb 11, 2010 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    The logarithm of the right side is incorrect.

    What is the logarithm of a product?
    What is the logarithm of e raised to some power?

    Please review the answers to these two questions.
    Last edited: Feb 11, 2010
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Rearranging Energy Decay Date
Rearranging Formulas: Fairly simple but I'm very stuck Nov 15, 2017
Rearraging equation Nov 7, 2017
Rearranging change in kinetic energy for mass Jan 12, 2016