Recent content by m.rahim

  1. M

    Calculating Change in Potential Energy of Moon 4.0 cm Closer to Earth

    By the way do I need to find the potential (i.e. GM/r) or the potential energy (GM m(moon) )/r ?
  2. M

    Calculating Change in Potential Energy of Moon 4.0 cm Closer to Earth

    I get something to the power 28 when I use the formula: for r in meters, -GMm/r - ( - GMm/(r+4x10^-2) so is the value I got wrong then?
  3. M

    Calculating Change in Potential Energy of Moon 4.0 cm Closer to Earth

    earth? Homework Statement Mass of moon - 7.3 x 10^22 kg Mass of Earth - 6.0 x 10^24 distance between moon and Earth - 356400 km change in distance 4 cm Homework Equations The Attempt at a Solution I just need to check if my answer is correct, I get some thing to the power...