which has moroe bouyancy when dpped in water ? iron ? aluminiom ?

To determine which material has more buoyancy when submerged in water, we need to consider the density of each material. The density of a substance is defined as its mass divided by its volume.

Let's compare the densities of iron and aluminum.

1. Find the density of iron: The density of iron is about 7.87 grams per cubic centimeter (g/cm³).

2. Find the density of aluminum: The density of aluminum is about 2.70 g/cm³.

Now, to compare the buoyancy:

When an object is submerged in a fluid, it experiences an upward force called buoyancy. The buoyant force is equal to the weight of the fluid that the object displaces. An object will float if the buoyant force is greater than or equal to its weight.

Comparing the densities of iron and aluminum, we find that the density of aluminum is lower than that of iron. Since the buoyant force depends on the density of the object compared to the density of the fluid, aluminum will have more buoyancy when submerged in water than iron. It is less dense than water, so it will float, while iron, being denser than water, will sink.

Therefore, aluminum has more buoyancy when submerged in water compared to iron.