Bouyancy Definition and 54 Threads

k in my advanced physics class 32S we are doing a project on buoyancy, one of the questions we have to answer is if you go out in a pool in a boat with a rock in it, then you throw the rock over board will the water level go up/down/stay the same. I am pretty sure that the water level will go...

(This isn't a homework question before you ask- it just came up in something I was reading.) Am I right in thinking that a boat floating in water would float neither higher nor lower if the gravity were altered, as its mass would remain constant? Would the same remain true if an object were...

A solid object floats on ethyl alcohol, with 68.2% of the object’s volume submerged. Using Table 11.1, identify the substance from which the object is made. ethyl alcohol has mass density of 806 kg/m what is the other substances mass density

Gas/liquid/solid in solid is irrelevant, liquid in gas is too dense to be bouyant, solid in liquid/gas and gas in liquid are easy. So I'm mostly interested in the liquid in liquid and gas in gas cases. Thanks.