Search results

  1. M

    Orientation of Satellites

    How are artificitial satellites made to point to the surface of the Earth as they orbit? Is it due their spin angular momentum?
  2. M

    Speed of light

    No, but apparently swans make good propulsion for early space craft. Light particles or "Photons" are packets of energy that you can't catch. If you were to try and "grab" one with your hand and catch a ride you may be disappointed. Traveling at light speed is impossible for such a large mass as...
  3. M

    Hot water feels cold

    I guess it's because of two things: Firstly the transfer of energy from the "hot" particles in the water to your hand. Tempreture is a measure of kinetic energy of particles. A hotter tempreture means a greater velocity of the particles. For heat to be transferred the kinetic energy must be...
  4. M

    Racing Hot Wheels cars

    Increasing the mass and reducing the area of car exposed to the air would increase the "terminal velocity" of the car down the plane, (If that is the correct term for this situation.) Because all objects fall at the same rate, increasing the mass would not decrease it's acceleration. Also...
  5. M

    Surface tension forces

    From what i know: Hydrogen bonding : Occurs between Hydrogen atoms and atoms of oxygen, fluorine and nitrogen. It is the strongest out of the three intermolecular forces listed here. Hydrogen bonds pull the molecules of water outwards, resulting in water being less dense when frozen than when...
  6. M

    Supergun compared to nuclear bombs

    I don't know. How much would it cost and how long would it take to inrich some weapons grade radioactive material? I'm pretty sure it's pretty costly for time and money. A railgun only requires a metal projectile, a strudy set of rails and a huge amount of electricity.
  7. M

    Properties Of Gravity

    Energy and Matter (Which is energy locked up) bend space time. Although i do not know why..... It doesn't follow a path it's traveling in a straight line. The space time is bent and it is traveling in a straight line through it. You have taken that picture out of context but i think what...
  8. M

    Supergun compared to nuclear bombs

    The railgun is also a kinetic weapon but instead of supplying the vast amounts of kinetic energy with mass it does it with velocity. Fired at many kilometers a second (according to wikipedia) it can hit fast and hard. The benefits of firing large chunks of metal as apposed to nukes include ...
  9. M

    Black and White

    Yeah basically it is emitting light that is not of the visible spectrum so it appears black. Check out this demo.
  10. M

    Accepted value of G with longitude

    Using Newton's equation of gravitation g = -(Gm) / r^2 G = Gravitational Constant r = Distance from centre of body g = "Force" due to gravity m = mass Assuming the radius of the object is 1 meter 0.0000000001 = (6.67300 × 10 ^ -11 x mass) / (...
  11. M

    One wing

    Sounds more like propoganda
  12. M

    Properties Of Gravity

    Oops i meant mass and energy bends space time. Thanks alot guys for the clarification on such an unusual subject!
  13. M

    Properties Of Gravity

    Gravity seems to be a very unusual force. From what i understand: Gravity can bend space-time Gravity occurs with an object with mass Gravity can attract objects through barriers Gravity attracts each unit mass of an object with the same force. Can people add and correct any...
  14. M

    Definition Of A Photon?

    I have been told many different stories of what light is could someone clarify exactly what it is? At the moment i am being told it travels by displacing matter but doesn't this mean that it would lose energy and eventually die? I thought it was supposed to be stable. Also how does it travel...