how mass and weight relared?
820356
mass = the amount of matter, independant of gravity and in sci units measure in kg's\n\nweight= force, the downward pull on an object due to gravity, measure in N (newtons)
851431
MASS / VOLUME\n that's way you measure it in g/mL
51910
Weight is a force, but when something is weighed you actually measure it's mass assuming you are in an environment in which the force of gravity is constant (i.e., you're at a fixed location <radius from the center> on a planet or massive planetary mass).\n\nof course, one's mass can be approximated by W=mg at fixed radii from such planetary masses (like the earth, a massive asteroid, a superdense star, whatever...) if the force of gravity, g, is known at that radius.\n\nThere are 2 possible variables here - mass and the force of gravity.  Which one do you know?  usually an approximation for g is given.  Which one do you measure, then...that would be mass.
927358
Well, you already have the answer several times (and once with kg and lb mixed up). But, you can ask google these questions and it will answer them directly (ie. won't search the web, will just tell you). See the link below.
699905
mass initial = Mi\nmass final = Mf\n\nMass growth = Mf - Mi\nPercent growth = Mf/Mi * 100
43312
In zero g mass is the same, but weight is different because weight is affected by gravity. People don't actually change size except for the fact that with less gravity acting on the human body, pulling it downward, things tend to puff up a bit. I'm not sure if that's what you mean or not. Hope this helps a bit.
704233
Yes. Density is mass/volume. Mass does not change, as weight in pounds does, with a change in gravity. Volume is also the same on the earth and on the moon.
72845
use nasa's calculator:\nhttp://www.exploratorium.edu/ronh/weight/
474542
Gravity does not change the mass of an object, only its weight.\n\nIf you travel away from the Earth, or any concentration of gravity, you will weigh less, but your mass is unchanged.
824559
Mass is measured in grams.
881707
Determining the mass is trivial: just weigh the block.  For the density, you will need to know the volume, which will require some measuring with a ruler.  Then divide the mass by the volume for your answer.
482172
Go to:\n\nhttp://www.worldwidemetric.com/metcal.htm\n\nIt's a great site for conversions. I hope I helped! =)
915631
Thea answer is basic:\nBecause one can measure mass to a higher degree of accuracy than volume.
504321
Mass (according to Einstein) coz mass changes into mass.
425701
No. You can understand the difference by going back to its source: the Newton's Second Law.\n\nF = ma\n\nThe weight of an object is the attractive force (F) exercised by the Earth on that object.\n\nAs the above equation shows, the mass (m) of an object is the constant of proportionality that links any force exercised on the object with the consequent acceleration (a).\n\nSo you see that the weight is a special case of force, that you have when a is the Earth's gravity acceleration. \n\nNow suppose you bring the same object on another planet, say Mars, where the gravity acceleration is different. Its mass doesn't change, but the weight does!\n\nThe weight of an object is an Earth accident, while its mass is a more fundamental concept because its value remains constant (at least within the non-relativistic limit, but this is another story).
1144840
mass divided by volume\nmeasured in kgm^-3
42452
Tell them that the mass is the actual ammount of stuff(matter) in a given object.  Weight is the force of gravity pulling on the stuff (mass or object).  The gravity is caused by the ammount of mass in the other object.  So on earth it has a constant mass so the ammount gravity on an object is constant.  Therefore on earth we can measure the mass of an object using its weight.