Kinetic energy compared to energy making up mass

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Discussion Overview

The discussion explores the relationship between kinetic energy and the energy associated with mass, particularly in the context of atomic structure and gravitational effects. Participants examine the distinctions and potential connections between these forms of energy, as well as the implications for understanding gravity and spacetime.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions whether kinetic energy can be compared to the energy that constitutes mass, suggesting a conceptual link between the two.
  • Another participant notes that kinetic energy is dependent on speed while mass energy is intrinsic, highlighting the equations K.E. = mv²/2 and E = mc² to illustrate their differences.
  • A different participant expresses uncertainty about the clarity of E = mc², questioning if the energy referred to in this equation is the same as that in kinetic energy equations, while also considering the implications of energy input in systems and its relation to gravity and spacetime.
  • Another participant clarifies that E = mc² applies to processes like nuclear fission and fusion, where mass differences result in energy release, and mentions particle annihilation as a conversion of mass to energy.

Areas of Agreement / Disagreement

Participants express differing views on the clarity and applicability of E = mc² in relation to kinetic energy, indicating that multiple competing perspectives remain without a consensus.

Contextual Notes

Some participants highlight the vagueness of E = mc² and its application, suggesting that assumptions about energy types and their interactions may not be fully resolved.

sambogrub
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I knew this may not be possible, but I was wondering if you can compare kinetic energy with the energy that makes up mass? When I say that, I mean the mass of our atoms that is represented by a quantity of energy.
 
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Kinetic energy depends on the speed of the object, mass energy is intrinsic. At ordinary speeds, K.E. = mv2/2 while mass energy is mc2. Since v << c, the conclusion is obvious.
 
But I had read that the equation E=mc^2 is very vague and cannot completely express energy in a mass. I mean in this question, is the energy we talk about in the above equation the same energy as what is expressed in a velocity equation? I know they are different concepts and different aspects are involved. But I am trying to determine if when you insert energy into a system in the form of thrust, is that energy the same as the energy making up most of the mass of an atom.
Im trying to wrap my mind around gravity and its effects on the space time field. I am wondering if the amount of energy that is inside a mass is what affects the field.
 
I don't understand most of your comment.
However E = mc2 refers to any process, such as nuclear fission or nuclear fusion where the total mass of the outgoing particles is less than the total mass of the incoming. The mass difference appears as energy, usually in the form of gamma rays. In addition when a particle (such as an electron) annihilates its antiparticle twin (such as a positron) all the mass is converted into energy.
 
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