why is the mass and not the weight of gold measured?
611971
Mass is a constant; weight varies by gravitational pull.
626920
Trick question! You can figure the VOLUME of dirt you dig up, but without the density of the dirt, you cannot calculate the mass or weight.
794045
we have F= G*M*m/r^2  and F=weight\n\nwhen M=M and r= r/2 then F=G*M*m/ (r/2)^2\n\ntherefore F(new)= 4*F and hence new weight is 4 times.\n\nthis is due to change in the value of g(acceleration due to gravity)\n\nsince F=mg= G*M*m/r^2   and hence only g is effected\n\nand hence weight also changes mass remainig same.
881632
Mass of an object never changes unless it is changed physically.\nMass has something to do with matter.  Weight will change, which is first decided by the amount of gravity.
94009
Weight can be determined by mass and the pull of gravity exerted on an object. But mass is not an indication of weight. Mass is presumed to be constant through varying gravities while weight fluctuates because it is proportional to both of these variables.
1157451
Gold's density is:\n\n19, 320 kg/m^3\n\nVolume of the bar is:\n\nV = 5 inches^3\n\n5 inches^3 = 8.19 x 10^-5 m^3\n\nThen: 19,320 kg/m^3 = x kg/[8.19 x 10^-5 m^3]\n\nSo, x = 1.58 kg, or 3.5 lbs.\n\nBeyond the facts you gave I couldn't tell you what the gold bars were actually like at that time....sorry.
32418
1 inch ~ 2.54 cm\n1 ft ~ 30.48 cm\n\ntechnically, a pound (lb) and grams/kilograms do not measure the same thing. a pound is a measure of weight (a force) while a gram is a measure of mass.  At sea level on earth, where gravity is about 9.81 m/s^2, a mass of 1 kg would approximately have 2.2 lb of weight.  But for basic science classes, this is assumed to be interchangeable
1162405
There is no equation to convert mass into weight, because it all depends on the density of the material. Even something as simple as a liter of water won't always weigh the same each time, because the temperature will change its density. Hot water is less dense than cold water, therefore the same volume of hot and cold waters don't weigh the same. Another example. Take a gallon of flour and weigh it. Now fill that same gallon container with sand and weigh it. It will not weigh the same because sand is denser than flour. \nThe bottom line is, you can't convert mass into weight because there are too many variables for one equation to solve all problems.
296385
10 pounds of feathers are heavier than 10 pounds of gold!  \n\nHowever, an ounce of gold is heavier than an ounce of feathers.\n\nThis is a pretty cool riddle.  Precious metals are measured using the Troy system (instead of our regular system).  This system has 12 Troy ounces to the Troy pound instead of 16 regular ounces to the regular pound.  The Troy ounce is a 10% larger than the regular ounce, but the regular pound has 25% more ounces so the net result is that the regular pound weighs more.
468649
Gold is much heavier than fools gold.
709561
An object has mass regardless of gravity.  Gravity gives us 'weight' by placing force on the mass.\n\nSo, strictly speaking, an object's "mass" is a measure of how much matter it contains.  An object's "weight" is a measure of gravity's effect on that object.\n\nSo an object's mass doesn't change if it is on a different planet, but its weight will.
161627
Mass can be defined as any structured  Matter that forms a volume. As opposed to other substances which are not mass and cannot be weighted;examples are masseless particles described in Relativity theories.\nWeight describes an interaction between two masses.\nBoth masses when touching would experience a force which we call weight. We on earth are able to sense weight. The greater the mass ,the more weight we feel.\n\nThe standard of weight is the kilogram which is measured on a balance scale is really a comparative measurement of mass.\nThe reason is that on a balance scale both masses experience the same acceleration. (aceleration is a measure of how much you are pushed down by gravity). Hence ,no matter where the scale is located in the gravity field it will always measure the same.\nHowever the case is not the same in a spring scale,because it directly measures a gravitational force. The scale at sea level would read different weight than the one on top of a high mountain. \nYou would not feel any weight if you were far away from a large mass as the earth. Since you have no mass interaction you would be weightless but not massless. Nevertheless, The gravity phenomena will still keep  you body in one piece.\nThe subject of measuring mass and weighing mass is not very clear to most people. It is very confusing ,so don't feel bad if you find it that way.
234986
A 14.5" cube of 24 karat gold will weigh 2000 pounds.  \n\nIt is so malleable that 1 ounce of gold can be spread into a continuous sheet large enough to cover a football field.\n\nGold has a specific gravity 19 times that of fresh water and twice that of lead.\n\nThe contact switches for automotive airbags are gold plated because of gold's resistance to corrosion.\n\nMore men became wealthy during the California gold rush catering to the needs of miners than became wealthy by mining.\n\nGold purity is measured in Karats (or Carats). The volume is divided by 24. 24 K gold is 24 of 24 parts pure gold. 14 K gold is 14 parts gold and 10 parts another metal (silver, nickel, copper, etc)
305755
Why not take a page from Archimedes' Eureka! moment?\n\nMeasure the density, then ask a jeweler.
904975
Because the real mass of atoms are too small or to complicated to be written in regular mass unit (like grams). It just standard constant to make the calculation and writing easier.\nIt's like using light year to measure distance in space instead of miles or kilometers.
78209
Nope, the magnetic information (not electronic!) doesn't weigh anything, it's all related to the orientation of the "magnetic moment" (up or down) of the atoms i.e. the way atoms are turning (to make it simple). they're not heavier if they turn in one sense than if they does in the other
565457
Mass is a property of a physical object that quantifies the amount of matter and energy it contains. Unlike weight, the mass of something stays the same regardless of location. In relativity, the quantity invariant mass, which is closest in content to the classical idea of mass, also does not vary between single observers in different reference frames. Mass is a central concept of classical mechanics and related subjects, and also several forms of mass appear in relativistic kinematics (see mass in special relativity).\n\nThere are three different quantities called mass:\n\nInertial mass is a measure of an object's resistance to changing its state of motion when a force is applied. An object with small inertial mass changes its motion more readily, and an object with large inertial mass does so less readily. \nPassive gravitational mass is a measure of the strength of an object's interaction with the gravitational field. Within the same gravitational field, an object with a smaller passive gravitational mass experiences a smaller force than an object with a larger passive gravitational mass. (This force is called the weight of the object. In informal usage, the word "weight" is often used synonymously with "mass", because the strength of the gravitational field is roughly constant everywhere on the surface of the Earth. In physics, the two terms are distinct: an object will have a larger weight if it is placed in a stronger gravitational field, but its passive gravitational mass remains unchanged.) \nActive gravitational mass is a measure of the strength of the gravitational field due to a particular object. For example, the gravitational field that one experiences on the Moon is weaker than that of the Earth because the Moon has less active gravitational mass. \n\nAlthough inertial mass, passive gravitational mass and active gravitational mass are conceptually distinct, no experiment has ever unambiguously demonstrated any difference between them. One of the consequences of the equivalence of inertial mass and passive gravitational mass is the fact, famously demonstrated by Galileo Galilei, that objects with different masses fall at the same rate, assuming factors like air resistance are negligible. The theory of general relativity, the most accurate theory of gravitation known to physicists to date, rests on the assumption that inertial and passive gravitational mass are completely equivalent. This is known as the weak equivalence principle. Classically, active and passive gravitational mass were equivalent as a consequence of Newton's third law, but a new axiom is required in the context of relativity's reformulation of gravity and mechanics. Thus, standard general relativity also assumes the equivalence of inertial mass and active gravitational mass; this equivalence is sometimes called the strong equivalence principle.\n\nIf one were to treat inertial mass mi, passive gravitational mass mp, and active gravitational mass ma distinctly, Newton's law of universal gravitation would give as force on the second mass due to the first mass\n\n \nNewton's third law, of reciprocal actions, shows that active and passive mass are proportional. As a result they can be defined to be equal\n\nIn the SI system of units, mass is measured in kilograms (kg). Many other units of mass are also employed, such as: grams (g), metric tons, pounds, ounces, long and short tons, quintals, slugs, atomic mass units, Planck masses, solar masses, and eV/c2.\n\nThe eV/c2 unit is based on the electron volt (eV), which is normally used as a unit of energy. However, because of the relativistic connection between (rest) mass and energy, E = mc2 (see below), it is possible to use any unit of energy as a unit of mass instead. Thus, in particle physics where mass and energy are often interchanged, it is common to use not only eV/c2 but even simply eV as a unit of mass (roughly 1.783 × 10-36 kg).\n\nBecause the gravit