Easy logic riddles with simple answers

I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?

Farmer Brown came to town with some watermelons. He sold half of them plus half a melon and found that he had one whole melon left. How many melons did he take to town?

There is bomb on top of a computer; around the computer are a hairbrush, keys, phone and a cup. When the explosion comes, what item destroyed first?

Feed me and I live, yet give me a drink and I die.

What is it that has hands, yet is unable to clap?

Sometimes I am loved, usually by the young. Other times I am dreaded, mostly by the old ones. I am hard to remember, also hard to forget. And yet if you do, You'll make someone upset. I occur every day everyone has to face me. Even if you don't want it to happen; embrace me. What am I?

This is as light as a feather, yet no man can hold it for long. What am I?

What has two hands and face but no arms and legs?

I follow you all day long, But when the night or rain comes, I am all gone.

I may seem real yet I am not, Once you're gone I'm often forgot. Time here stretches and it shrinks, It all depends on how you think. I may be good, I may be bad, I may be the same as one you've had. What am I?