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

Energy and frequency question

  1. Nov 14, 2011 #1
    Energy and frequency E=hv

    I have a simple question that is that is E=3/2x Kb x T, where kb is boltzmann constant.
    I understand that this is involve 3 degree of freedom, but as i was reading through the forum, i come across 1 equation stating E=kb x T. So is it true? and what application would this apply to?

    And with regards to quantum physics, since kinetic energy= 1/2MV2, and =3/2kbT,
    yet, λ=h/p=h/mv, where h is planck constand and p is momentum, and λ is wavelength.

    Since λ=V/F, where v is velocity and F is frequency,
    then this would mean that V/F=h/mv, and I would get hxF=mV2,
    and since E=hxv, where E is energy, h is planck constant, and v is velocity,
    would that mean that E=mV2 which I don't understand as I thought E was suppose to be 1/2mv2, yet now the 1/2 has disappear.

    Thanks a lot for the help, a bit confused with all the energy, frequency and wavelength.
     
    Last edited: Nov 14, 2011
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted



Similar Discussions: Energy and frequency question
Loading...