Good Riddles

Question: Drop me and the world will shatter,
and you can always find me where you empty your bladder.

What am I?

Question: My first doth affliction denote,
which my second is destined to feel.
And my whole is the best antidote,
that affliction to soften and heal.

What am I?

Question: You have a cup of tea (A) and a cup of coffee (B) (equal amounts), and you take a spoonful of the coffee (B) and mix it thoroughly into the tea (A). Then you take a spoonful of tea (A) and mix it with the coffee (B). Does the cup that originally had tea in it (A) have more coffee or does the cup that originally had coffee in it (B) have more tea?

Question: After looking for his long lost brother that he has never met before, Justin is able to learn his brother's home address and name. When he shows up at his house he finds a fireman, a police man, and a mechanic watching television. He immediately hugs his brother.

How does he know which one is his brother?

Question: I used to fill rooms but now I'm a tower,
I can stay put or I can travel far.

What am I?