1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    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!

Rate of energy release by Polonium-210

  1. Jan 22, 2013 #1
    alev.png



    In the mark scheme they have done
    P = (8×1013) × 5.3 ×106(1.6 × 10-19) = 67.8 W



    I don't understand why they have done this?

    How does Activity x Energy= Power ?
     
  2. jcsd
  3. Jan 22, 2013 #2
    "Activity" (in Bq) is the number of nuclei that decay per second.
    "Energy" is defined as the energy per nucleus released. As defined in the answer here, the units after the conversion will be in joules (MeV * 1.6 × 10-19 = Joules).

    Hence,
    (number of nuclei / second)*(joules / number of nuclei) = (joules / second) = watts

    Make sense?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Rate of energy release by Polonium-210
Loading...