Proton=positron+neutron. what about law of conservation of mass?

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Discussion Overview

The discussion centers around the relationship between protons, positrons, and neutrons, particularly in the context of the law of conservation of mass and energy. Participants explore the implications of β+ decay and the energy requirements for such processes.

Discussion Character

  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant questions whether the combination of a positron and a neutron can equal a proton, suggesting that this might violate the law of conservation of mass due to differing masses.
  • Another participant clarifies that a proton is not simply composed of a positron and a neutron, referencing β+ decay as a relevant process where a proton decays into a neutron, positron, and neutrino, which requires energy.
  • There is a suggestion that the energy necessary for β+ decay comes from an external source, specifically the rest of the nucleus containing the decaying proton.

Areas of Agreement / Disagreement

Participants express differing views on the composition of protons and the implications of β+ decay. There is no consensus on the initial claim regarding the conservation of mass in this context.

Contextual Notes

The discussion involves assumptions about mass and energy relationships in nuclear processes, and the specific conditions under which β+ decay occurs are not fully resolved.

vkash
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neutron weighs higher than proton and you add a mass of positron which is around equal to to electron. so mass in right had side is much larger than that is LHS so is it disobeying Law of conservation of mass?
if it disobeys it and follow law of conservation of mass and energy.(E=mc2) then it doesn't seems to form any bond which causes release of energy and cause this extra mass.
 
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A proton is not composed of a positron and a neutron. I think that you are thinking of β+ decay where a proton can gain energy and decay into a neutron, positron, and neutrino. See: http://en.wikipedia.org/wiki/Beta_decay#.CE.B2.2B_decay

Note that β+ decay requires energy for exactly the reason you mention, the mass of the products is greater than the mass of the reactants.
 
DaleSpam said:
A proton is not composed of a positron and a neutron. I think that you are thinking of β+ decay where a proton can gain energy and decay into a neutron, positron, and neutrino. See: http://en.wikipedia.org/wiki/Beta_decay#.CE.B2.2B_decay

Note that β+ decay requires energy for exactly the reason you mention, the mass of the products is greater than the mass of the reactants.

A i have said it does not seem to form an new bond so is this energy given by external source?
 
Yes, the external source being the rest of the nucleus containing the decaying proton. See the last two sentences of the section I referenced above.
 
DaleSpam said:
Yes, the external source being the rest of the nucleus containing the decaying proton. See the last two sentences of the section I referenced above.

thanks DaleSpam for your help.
 

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