the iron bob floats in Mercury because it density is less than mercurys density
An iron ball floats on mercury because mercury is much denser than iron. The buoyant force acting on the iron ball due to the displacement of mercury is greater than the gravitational force pulling it downward, causing it to float.
Iron has a higher density than water, so it sinks in water; but is less dense than mercury so it floats.
the iron bob floats in mercury because it density is less than mercurys density
If an object floats in water it will also float in the much denser mercury
Which rock? Any liquid that is dense enough will support a rock; the most common would likely be mercury, in which even iron floats.
A block of iron will float in mercury due to the higher density of iron compared to mercury. In water, the iron block will sink because the density of iron is higher than that of water. The buoyant force acting on the iron block is determined by the density of the surrounding fluid.
Mercury is called the "iron planet" because it has a high concentration of iron in its core. Scientists believe that the planet formed from the heavy elements, including iron, that were present in the early solar system. The iron content gives Mercury a high density and makes it similar to Earth's core in composition.
It is function of the density of the three metals. The density of iron is less than that of mercury, but the density of gold is greater. Density of iron: 7.86 g/cm3 Density of mercury: 13.53 g/cm3 Density of gold: 19.3 g/cm3 Anything more dense than a liquid will sink in that liquid, and anything less dense will float. For comparison, the density of water is only 1 g/cm3, so all three would sink in a pool of water. Styrofoam for instance is less dense than water and so it floats in water.
Oil is denser than cork, so the cork would float.
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Solid iron will float in liquid mercury. In most liquids it will sink.