What would you like to do?
2.563 kg per millimetre cube
Density is mass per unit volume. More marbles is more mass, but will be more volume as well. If the marbles are all the same, any number of them will have the same densi…ty, which is 2.5 grams/cm3. This is a "thinking" problem rather than a "calculation" problem.
The density of the marble is about 4.94 g/cm3
Marble has a specific gravity of 2.56.
2.6 - 2.9 g/cm3. Cobb, F. (2009) Structural Engineer's Pocket Book. 2nd Edition. Butterworth-Heinemann, Oxford.
divide the mass over the volume and the answer is 2.3 D=M over V D=23 over 10=2.3.
You weigh it in some water and if it float its density is less than one and if it sink its over than one
It would probably be much more accurate if you dealt with 100 marbles. First you weight all the marbles together to determine their weight (mass). Then you would use a measuri…ng jar which contains, say,500 cubic centimetres of water (measured by looking at the scale on the jar) and carefully place the marbles in the jar (without splashing) before reading the cc scale again. If the second reading was 1000cc (a litre), then the density of the marbles is found by dividing the mass (weight) by the volume of the marbles, which is 1000cc minus 500cc = 500cc; hence the density required is 1000gm/500cc = 2 grams per cubic centimetre (2 gm/cc).
the rock has a greater volume than the marble
Assuming it is a round marble (spherical actually) one first has to weigh it. Next one has to measure its diameter using a micrometer or a vernier scale. Halve the diameter to… obtain the radius R. The volume can then be calculated by using the equation 4/3 x pi x R x R x R. Pi can be taken as being 22/7 or 3.142 Density is mass divided by volume and on the surface of the earth, mass and weight are usually regarded as being the same (not strictly true but near enough)
Density = Mass/Volume = 3.050/[4/3*pi*r 3 ] = 2.91 grams/cm 3
Since density is mass per unit volume, the density is the same.
.5 gm/cm cubed Which is not possible ... it's half of water's density.