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"how much would I weigh if there was no air?"The same. Weigh is m*g and mass is the same, gravity is the same.
The same. Weigh is m*g and mass is the same, gravity is the same.
Quote from: lightarrow on 08/03/2011 19:30:26The same. Weigh is m*g and mass is the same, gravity is the same.There seem to be different schools of thought about that. Some definitions say it's how much you actually weigh (on some sort of weighing device). If so, your weight varies with changes in atmospheric pressure.Probably a good reason to stick with "mass" 
But if there's no air, then you would remove the mass of the air in your body, right?
The real question here should be "What would the scale say in a vacuum?"
I have a question regarding angels and pin heads but I will refrain from asking :-)
I see no confusion or ambiguity in the question at all. The question cited the buoyancy of water which would make a person weigh less and asked if air would have a similar effect (even if much less).