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Guille
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01-26-2006, 02:54 PM

I have a big wonder. The difference between the equations F=ma and E=mc^2 is that in the first one F and a are the vectors that change whiles in the second one E and m change. This means that they are not compatible equations as mass means is constant in one and variable in another. But instead, we do accept that F=ma is compatible with thermodinamical equation E=Fd or in some cases E=Fr. The important thing is that here we make compatible the vectors of energy and force, obviouslly related. Therefore the equation F=ma is compatible with E=Fd and so is E=mc^2. But these are still not compatible. This doesn't match our logic: we say that if a-->b and b-->c then a-->c is logical. But with these equations we assume newton's law can match the thermodynamic equation, and that this one can match Einstein's, but no that Newtons' can match Einstein. Not much sense.
  
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