Recent content by tommowg

  1. tommowg

    Fermi Energy and Conduction Electrons

    The problem: A simple cubic metal has an electron density such that the Fermi energy just touches the edge of the first Brillouin zone. Calculate the number of conduction electrons per atom for this condition to be fulfilled. The attempt at a solution: I know that the electron density for a...
  2. tommowg

    Using Fresnel Formulae and Poynting vector problem

    Homework Statement I'm having a problem using the fresnel formulae for these two problems below: 1. Using Fresnel formulae and expression for the Poynting vector show that at the interface between two dielectrics in the absence of absorption R+T=1, where R – is reflectivity and T –...
  3. tommowg

    Rearranging Young's Modulus Equation for Force: Help Needed!

    I've used your idea to come up with: F = E/L*A*ΔL Is this right? Thanks.
  4. tommowg

    Rearranging Young's Modulus Equation for Force: Help Needed!

    Homework Statement Hi all I'm new and wondering if you could help me rearrange this equation for a Young Modulus question: Homework Equations Equation for Young Modulus is E = F*L/A*ΔL * is multiplied / is divide How can I make F the subject of this equation? The Attempt at a...
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