physics

  1. S

    Physics question-The Earth atmosphere and satellite!!!?

    If the Earth had no atmosphere, what would be the period of a satellite skimming just above the Earth's surface? Can anyone help me answering this question with explaination?
  2. A

    Physics question about earth and satellite!?

    A satellite of mass 200kg completes a circular orbit of the Earth in 120 minutes. A 400kg satellite is then put into orbit at the same height above Earth. What is the time in minutes, for the 400kg satellite to complete a circular orbit? I know the answer is 120, I just don't know how to get...
  3. J

    PHYSICS HELP!!! about gravitational force, satellites, and orbit energy?

    One way to attack a satellite in Earth orbit is to launch a swarm of pellets in the same orbit as the satellite but in the opposite direction. Suppose a satellite in a circular orbit 500 km above Earth's surface collides with a pellet having mass 4.0 g. a) What is the kinetic energy of this...
  4. J

    what are the physics of extreme biking?

    whats is the physics of extreme biking?? i need to do a project and i need to know what the physics of biking is????
  5. N

    Physics Help! A satellite has a mass of 100 kg...?

    A satellite has a mass of 100 kg and is located at 2.04 x 10^6 m above the surface of Earth. (a) What is the potential energy associated with the satellite at this location? _______ J (b) What is the magnitude of the gravitational force on the satellite?______N
  6. P

    Physics- Period of Satellite min and how far from earth? PLease help!?

    The Moon has a period of 27.3 days and has a mean distance of 3.90 x 10e5 km from the center of Earth. (a) Use Kepler's laws to find the period of a satellite in orbit 7.60 x10e3 km from the center of the Earth. ??min (b) How far above Earth's surface is this satellite? ??m
  7. S

    Internet physics resources for university?

    I am going to start a Natural Sciences course in Cambridge this October. I will be studying maths, computer science, chemistry and physics. I am wondering if there are any good websites that I could visit in order to prepare myself for the upcoming tough physics? So far I only have A-level...
  8. I

    physics geosynchronous satellite problem and mass problem i cant get?

    hi, help would be nice, thanks 1) Given: G = 6.67259 × 10^-11 Nm2/kg2 . A 1060 kg geosynchronous satellite or- bits a planet similar to Earth at a radius 1.95 × 10^5 km from the planet’s center. Its angular speed at this radius is the same as the rotational speed of the Earth, and so they ap-...
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