Question

Why does aluminium foil vessel float and the folded foil sink ??
( explain like in 9 th standard Kerala Syllabus )​

Answer 1

Explanation:

The density of aluminum is 2.7 g/ml. The density of water is 1 g/ml the air trapped in the ball and the foil boat makes the density of the metal boat less that 1 g/ml. so the boat and ball floats. When you remove the air from the foil ball the density of the foil becomes more that 1 g/ml so the foil now sinks.

OR

When the aluminum ball had a diameter of 6.0 cm, the ball should have floated well because it had a density lower than that of water due to the air inside of the ball, just like steel ships that can float because their density has been lowered by encasing air inside the hull.

Answer 2

The density of an object determines whether or not it'll flow or sink in every other substance. An item will flow if it is much less dense than the liquid its miles placed in.

Explanation:

• The density of aluminum is 2.7 g/ml. The density of water is 1 g/ml the air trapped withinside the ball and the foil boat makes the density of the metallic boat much less than 1 g/ml.
• So the boat and ball flow. When you put off the air from the foil ball the density of the foil will become greater than 1 g/ml so the foil now sinks.
• When the aluminum ball had a diameter of 6.0 cm, the ball need to have floated well.
• It had a density decrease than that of water because of the air inner of the ball, much like metallic ships that may flow due to the fact their density has been decreased through encasing air in the hull.

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