Does a hard boiled egg have buoyancy?

Yes, a hard-boiled egg has buoyancy.

Here's why:

* Buoyancy is the upward force exerted by a fluid (like water) on an object submerged in it.

* An object will float if the buoyant force is greater than its weight.

* A hard-boiled egg is denser than water. This means it will sink in water if you just drop it in.

* However, if you dissolve enough salt into the water, you can make the water denser than the egg. At that point, the buoyant force will be greater than the egg's weight, and it will float.

This is a classic science experiment! You can try it at home:

1. Fill a glass with water.

2. Carefully place a hard-boiled egg in the water. It will sink.

3. Slowly add salt to the water, stirring until it dissolves.

4. Eventually, the egg will float!

Let me know if you'd like to explore the science of buoyancy in more detail.