plz help me with my homework

/in /by

These questions are about electrical energy

Hi, here is my homework, please help me with that. The direction of PDF #1 is x y z, and -x -y -z. please show me the work that I can understand each steps, and I want to use is to prepare my Test.

Also, the due day is May 17th, 11PM WEST.

I can add tips, it’s depnds on you work.