Answer:
Physicists have built devices to move me very fast. My last seven letters can be commonly found in newspapers magazines and journals.
Four leaves I have.
Who plays when he works and works when he plays?
When you take away the whole from me there is always some left.
Weight in my belly, trees on my back, nails in my ribs, feet I do lack. What am I?
I flow from the Homer’s mouth when he sees doughnuts.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic