Recent content by MarcZero

  1. M

    Finding the Temp of the Sun given only 3 variables.

    Homework Statement This is for my Optics class: Given the radius of our planet, its temperature, and the distance to the Sun, estimate the temperature of the Sun (hint: use the Stephan-Boltzmann law). Homework Equations Radius of Earth \widetilde{=} 6,378.1 km Temperature of the...
  2. M

    Finding the Scalar Potential of a Sphere with Non-Uniform Charge Density

    Homework Statement A sphere of radius a has a charge density which varies with distance r from the center according to http://img14.imageshack.us/img14/9577/wangsnessproblem594.gif where A is a constant and http://img35.imageshack.us/img35/555/wangsnessproblem593.gif .[/URL] Find the...