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   sci.physics.research      Current physics research. (Moderated)      17,516 messages   

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   Message 16,145 of 17,516   
   Y Porat to Y Porat   
   Re: Conservation of momentum   
   15 May 18 00:11:00   
   
   From: poraty149@gmail.com   
      
   On Friday, April 13, 2018 at 1:33:17 PM UTC+3, Y Porat wrote:   
   > On Thursday, April 12, 2018 at 12:03:28 AM UTC+3, Y Porat wrote:   
   > > On Monday, February 19, 2018 at 2:16:46 PM UTC+2, Arindam Banerjee wrote:   
   > > [[Mod. note -- 25 excessively-quoted lines snipped here.  -- jt]]   
   > > > [[Mod. note --   
   > > >   
   > > > 1. Permanent magnets don't violate conservation of energy.   
   > >   
   > > ===========================   
   > > if so   
   > > how is it that a permanent magnet   
   > > don t violate conservation of energy ???:   
   > >   
   > > there is there some nonstop movement of something   
   > > that can even do some work :   
   > > (like   
   > > attracting/moving along a distance   some piece of iron mass- along some   
   distance   
   > > and still   
   > > -''no violation of conservation of energy'' ??!!   
   > > ====================   
   > > TIA   
   > > Y.Porat   
   > > =============================   
   > >   
   > > [[Mod. note -- No violation of conservation of energy here, any more   
   > > than there would be if that piece of iron mass slid down a slope.  In   
   > > both cases you have a system with some potential energy, which is used   
   > > to do work (and in which frictional forces result in that potential   
   > > energy being converted to heat as the iron mass slides).   
   > > -- jt]]   
   > ==================   
   > I am not referring to the to one act of attracting a piece  of iron   
   > I wonder about the   
   > **permanent ability** and what makes/keeps  that permanent ability   
   > -theoretically forever ! to attract a piece of iron   
   > without being exhausted !   
   > ================   
   > TIA   
   > Y.Porat   
   > ========================   
   >   
      
   > [[Mod. note -- This seems quite analogous to the Earth's permanent   
   > ability -- theoretically forever -- to gravitationally attract objects!!!!!!   
      
   ===   
   right !!   
   and if so   
   it is more important to go on   
   and solve that important issue!!   
   it seems to me   
   that resolving it more thoroughly --   
   might bring to some unexpected advance !!   
   ===   
   TIA   
   Y.P   
   =========================   
      
      
   > on the Earth's surface without being exhausted.  I don't see any   
   > violation of conservation of energy here.   
   > -- jt]]   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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