Using Only Five 5's and any mathematical operator make sum as 37

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

What is the end of everything?

What is the coolest letter in the alphabet?

What 5-letter word typed in all capital letters can be read the same upside down?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?