Recent content by cary5

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    Is Gravity Not a Force in General Relativity?

    i have to writ a paper and i m confused here z wat i go so far neton said there is gravity and einstine came up with his space-time fabric
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    Is Gravity Not a Force in General Relativity?

    ok if Newton was right what did einstein disprove
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    Is Gravity Not a Force in General Relativity?

    well if the eath follows a curved path arount the sun i would no call it a force of "pull"
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    Is Gravity Not a Force in General Relativity?

    if newten was wrong about gravity, and einstein is right (general Relativity) does it mean that gravity is not a force.
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    Why does light bend when it enters a different medium?

    what causes the light to bend in the following vidio? http://www.youtube.com/watch?v=hBQ8fh_Fp04&playnext=1&list=PL993D6B3429F14C8A i think its refraction.
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    Acceleration due to gravity on a planet's surface

    ya that sounds good and it actuly makes sense
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    Acceleration due to gravity on a planet's surface

    0.037m/5.0*10^23 =(7.4*10^-26)m
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    Acceleration due to gravity on a planet's surface

    Fg=(6.67*10^-11)(5.00*10^23)(m)/(3.00*10^7)^2 =0.037m
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    Acceleration due to gravity on a planet's surface

    Fnet/5*1o^23=a ? now i have 2 varabls
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    Acceleration due to gravity on a planet's surface

    Fg=G*m*m/r sqd but that does not give me g and besids i need 2 masses for this
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    Acceleration due to gravity on a planet's surface

    What is the acceleration due to gravity on the surface of a planet with mass 5.00 x 1023 kg and radius 3.00 x 107 m? If you need to, suppose that a block of mass 50 kg is at rest on the surface. Why does it not matter what the mass of the block is? a= Fnet/mass i don't know the Fnet
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    Force of Gravity: Mass Change Factors

    i think i got it ok so (gm2m)/r2 divided bt (Gmm)/r2 and now everythig cansles out and we are left with 2m/m and the m's cancle and we get 2/1 is that right? is the facto 2/1 for the firs one
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    Force of Gravity: Mass Change Factors

    (Gm1*2m)/r squd i don't know were to go from here