Why Wine Glass Stem is so long?

People put me on the table and cut me but do not eat me. What am I?

Imagine you are in a room with no windows or doors. How will you get out?

What does a man do only once in his lifetime, but women do once a year after they are 29?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

what does the below math rebus puzzle mean?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

What runs around the whole yard without moving?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?