Answer:
Vectors have a size and direction. Each of the existing vector quantity has a magnitude and a direction. Having direction along with the magnitude is the difference of a vector quantity from a scalar quantity. Vectors are indicates with arrows.
The element would have 52 protons because atomic number gives protons.
C Camera. I think this because you can make timelapses with cameras which makes it easy to see.
Self productive and it depends on how whom is behaving.