You probaly read what i wrote earlier gregorS, if not, type in "how to find the density of a large rock" heheheheheheheh HAHAHAHAHAH MWOHAHAHAHAHAH!
With out knowing further knowledge about the rock it is unable to determine the exact density. However, since the rock floats, presumably in water, the density must be less then 1.00g/L.
116.8478 cubic centimeters (approximately) You can determine this by dividing the mass by the density.
To determine the density of an object, you need its mass and volume. If the object is oddly shaped, you can determine its volume by measuring the volume of water displaced when thee object is submerged in a container of water.
density can be used for gravitational acceleration, you will need to know the density of the country rock and that of the body of interest to give you sigma which is the density change, you can then go on to work out the graph and determine the size and depth of the body.
Determine its volume by how much water it displaces, then divide mass by volume
You could weigh it. You can also determine its density by comparing it to an equal volume of water, but first you would have to determine how much water it displaces to determine its volume.
The same way you determine the density of any other object. Divide the mass by the volume. Add: density = mass/volume = 5g/1mL = 5g/mL = 5g/cm3* *1mL = 1 cm3
It's weight. The general rule is that an object will sink if it has a density greater than the liquid in which it is placed.
Not always easy. Since density is defined as the mass of a unit volume of material,you would measure the volume of the rock by putting it into a container half filled with water and then measure the volume change.
If you want to determine the density of an object, you would measure the mass and volume, then divide mass/volume to determine density. This can help determine the composition of the object. For example, if you find a rock that looks like a gold nugget. The density of gold is a known value, so one of the tests in determining if you are holding real gold would be to determine the density of your rock. This is one example. Another (maybe more 'real world' for you). Shipping and cargo companies measure the volume of packages as they go by on the conveyor belt, so that they can figure how many will fit in a particular truck.
The mass divided my the volume determine the density of an object
The density of an object is constant, therefore, no rock can have less density in water.