Oil is denser than cork, so the cork would float.
No.
Depends on the medium, and whether the ball is solid or not. A solid ball would float on mercury, sink in water. If it were hollow enough (or filled with, say, cork) it would float in water.
A hydrometer consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float upright. Mercury has a higher density, thus a lower volume for the same weight than lead. It is a toxic liquid metal, but also more dangerous and difficult to clear up the mess when a glass hydrometer is broken
There are tents designed to Float in water. But not all tents designed to float.
Yes, nickel can float on liquid mercury because the density of nickel is lower than that of mercury. This means that nickel will not sink when placed on liquid mercury, and instead will float on its surface.
it will float
No, mercury is denser than ethanol, so it will sink and not float.
Solid iron will float in liquid mercury. In most liquids it will sink.
Yes, wood will float on mercury because mercury is much denser than wood. The density of mercury is about 13.6 times greater than that of wood, so wood will not sink in mercury and will actually float on its surface.
No, they are not bouyant. They won't float on water, but they will float on mercury.
Oil is denser than cork, so the cork would float.
No, rocks are denser than mercury, so they would sink in mercury. Mercury is a very dense liquid at room temperature, so objects that are less dense than mercury will float on it.
Yes, polypropylene would float on mercury due to its lower density compared to mercury. Polypropylene has a density of around 0.9 g/cm³, while mercury has a density of about 13.6 g/cm³, making polypropylene less dense and causing it to float on mercury.
No.
No, it sinks.
No, wood would not float in mercury. Mercury is a dense liquid metal, much denser than water, so wood would sink in it.