I make two people out of one. What am I?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

What is more useful when it is broken?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

What you cannot hold but it is yours?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?