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

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

How many times can you subtract the number two from the number fifty?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

I know a nine-letter word having only one vowel.
Do you ?