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physics

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A satellite is in a circular orbit about the earth (ME = 5.98 1024 kg). The period of the satellite is 4.20 104 s. What is the speed at which the satellite travels?

  • physics -

    T=2•π•r/v=2•π•sqrt(r³/GM)
    T²=4π²r³/GM,
    r=cuberoot{GMT²/4π²}=....
    v=sqrt(GM/r)=.....

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