You are provided with a hollow iron ball A of volume `15 "cm"^3` and mass 12 g and a solid iron ball B of mass 12 g. Both are placed on the surface of water contained in a large tub.
Which ball will sink? Give a reason for your answer. (Density of iron = `8.0 "g cm"^(-3)`)

Explanation

To determine which ball will sink, we need to calculate the density of both balls and compare them with the density of water. The ball that has a density greater than that of water will sink, while the one with a lower density will float.

### Step 1: Calculate the density of the hollow iron ball A.
- The formula for density is given by:
\[ \text{Density} = \frac{\text{Mass}}{\text{Volume}} \]
- For ball A:
...