Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Question of nuclear transformation

  1. Mar 2, 2007 #1
    a U(a=238,z=92) originally at rest decays spontaneously to form thorium and an alpha particle.no gamma rays is emitted
    (a):the alpha particle emitted during decay travels a distance of 25mm in a cloud chamber.given that on average alpha particle creates 4 *raise to power 3 ions per mm of track in cloud chamberand energy required to poduce one ion pair is 4.8*raise to power -18 j.find kinetic energy with which alpha particle was emitted.
    (b):hence deduce the initial velocities of alpha particle and thorium nucleus
    c:calculate the difference between the rest masses of original uranium nucleus and sum of product of rest masses of products of decay
    plz solve them for me
    a:4.8*raise to power -13j
    b:velocity of alpha:1.20*raise to power 7 m/s
    velocity of thorium :2.05*raise to power 5 m/s
    c:mass:5.42* raise to power -30 kg
    plz post the complete process h did u solve this question
  2. jcsd
  3. Mar 2, 2007 #2


    User Avatar

    Staff: Mentor

    As I explained to you in a different thread, you need to show us your own work in order for us to help you.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook