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OfflineChuangTzu
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Registered: 09/04/02
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Re: Energy question. [Re: johnm214]
    #14813688 - 07/23/11 01:47 PM (12 years, 9 months ago)

Quote:

DieCommie said:
Relativistic mass is a term that has fallen out of favor because it's misleading.  Photon's dont have mass, they have energy and momentum.





This^.  A few different things get thrown around under the blanket term of "mass".  The mass we are talking about is an intrinsic property of matter.  Relativistic mass is an extrinsic property.

Quote:

johnm214 said:
Anyways, my replies kind of miss the point of the original discussion which is the question of whether:

a) mass and energy are equivalent properties
b) whether a chemical reaction with a change in energy will likewise have a change in mass of the chemicals, specifically a change equal to the change in energy divided by the square of c




W.r.t. a), it's pretty clear that they are not equivalent in the sense that they can't be used interchangeably in most cases.  There are some "realms", however, where an analysis can be done equally in a mass domain or an energy domain.  An example would be when dealing with elementary particles which are undergoing decay processes.

The answer to b) is a lot more straightforward and has already been answered in the affirmative.

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Offlinezappaisgod
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Registered: 02/11/04
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Re: Energy question. [Re: johnm214]
    #14817742 - 07/24/11 01:01 PM (12 years, 9 months ago)



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