You have a cube of ice floating in a glass of water. The question is what fraction of the ice will be above the water line? Assume that the ice is not bobbing.

Most of you have probably heard the answer to this before. But please provide a proof or solution, along with your assumptions.

And Jonathan, if you're just trying to be an @$$, I suggest that you not even post any more comments.

I hope you know that it is an understood rule that you only deal with what you are given. If the problem doesn't mention it, that means it's not part of the problem.

But I will humor you one more time. What you said in your last two "uncertainty" comments are mentioned in the problem. Perhaps you have problems reading or you have problems with English, but I will address them.

First of all, I said water. I did not say salt water. I did not say sugar water. I did not say tap water. I said water, which means pure water.

I said a cube of ice. I did not say 20 cubes of ice. I did say 5. In case your English isn't good enough, "a" refers to singular. If there were other cubes of ice there, it would've been mentioned.

And yes, the cubes will eventually melt. But the problem states very clearly that it is floating. So it has not melted yet. So what makes you think that it melting later will affect this problem?

So please stop posting useless comments.