What does this below rebus puzzle mean?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

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

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

I have eight fingers and two thumbs but I do not live. What Am I?

What do you see in the given picture?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?