Question

3. How is Plimsoll line a safety measure for ships?
4. How does the density of a substance vary with change in temperature?​

Answer 1

Explanation:

1. Plimsoll mark on the hull of a floating ship. The Plimsoll line is a reference mark located on a ship's hull that indicates the maximum depth to which the vessel may be safely immersed when loaded with cargo

2. Density changes with temperature because volume changes with temperature. Density is mass divided by volume. As you heat something up, the volume usually increases because the faster moving molecules are further apart. Since volume is in the denominator, increasing the volume decreases the density.

Answer 2

Answer:

the ans

Explanation:

3. How is Plimsoll line a safety measure for ships?

Ans=A commercial ship is properly loaded when the ship's waterline equals the ship's Plimsoll line. Plimsoll mark on the hull of a floating ship. The Plimsoll line is a reference mark located on a ship's hull that indicates the maximum depth to which the vessel may be safely immersed when loaded with cargo.

4. How does the density of a substance vary with change in temperature?

Ans=Density changes with temperature because volume changes with temperature. Density is mass divided by volume. As you heat something up, the volume usually increases because the faster moving molecules are further apart. Since volume is in the denominator, increasing the volume decreases the density.