(November 20, 2011 at 11:39 pm)IATIA Wrote: Unless it is floating in the oil, it will still displace some water. It will be somewhere around 7kg - the weight of the displaced oil. A little more math than that, but right now I am not in math 'mode'.
It really comes down to how much oil is added to the water. If there is only a small amount at the surface, it isn't going to significantly affect the calculations.
If, on the other hand, if there is a substantial amount, you have to factor in how much oil is displaced along with the water.
If it's floating entirely in oil, the calculations become simple again, you'll just be displacing 7kg of oil instead of water.
You really do need to know how much oil there is to do this problem.
