Recent content by kathykoo9

  1. K

    T: Lorentz Transformation for Length and Relativistic Mass

    Using the Lorentz transformation, at what speed relative to speed of light c must you travel so that your length along the direction of motion is seen to decrease by a factor of 2? For this speed, hwo much would your mass be increased? Please show steps, I'm confused with this question!
  2. K

    Graduate Which cosmological model do you find most compelling?

    Which of the common cosmological models do you prefer and why? Assume we don't know which if any of the models is the actual one that matches the universe.
    • kathykoo9
    • Thread
    • Cosmological Cosmological models Models
    • Replies: 4
    • Forum: Cosmology
  3. K

    High School How Much Would Your Weight Change on the Surface of the Sun?

    How much more of less would you weigh (same as force) at the surface of the sun than on earth?
  4. K

    Graduate Mass-Energy Conversion: Solving Energy Crises with MegaW

    If your entire mass were to be converted to pure energy, how long could you provide a MegaW (10^6 W) of energy to help in solving our energy crises?
  5. K

    Ans: Help With Astrophysics: Calculate 1600 Light Years Distance & Luminosity

    help! how much more or less would you weigh (same as force) at the surface of the sun than on earth?
  6. K

    Ans: Help With Astrophysics: Calculate 1600 Light Years Distance & Luminosity

    if your entire mass were to be converted to pure energy, how long could you proviede a MegaW (10^6 W) of energy to help in solving our energy crisises?