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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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