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Physiology & Medicine / Does body temperature change basal (or resting) metabolic rate?
« on: 27/02/2011 15:31:40 »
Does anybody know the answer to this?
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total mass of a system of two particles with mass m1 and m2 is not m1 + m2.
Furthermore, where does the mass of a massive particle come from? Part of a mass of an atom is in the EM fields between nucleus and electrons. Most of the mass of a proton or a neutron is in the strong force fields between quarks.
A system of two photons not traveling in the exact same direction has mass.
A static electric field has mass.
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The fact that mass, according to Oxford dictionary is "that which occupies space and possesses rest mass, especially as distinct from energy" is not very explicative...QuoteHow does energy and mass curve space-time similarly?Because they are the same thing: the mass of a stationary system *is* that system's energy (divided by c2). The mass of a massive particle *is* the sum of all the energies of the different components of that particle, if it's made up of other things (energy is additive).