The answer to your question is capacitor :)
The weight of the car in the picture of the computer screen is 9,800 Newton's.
I cant do all but I can do number 4
When force moves ur leg u start skatin and when that happenes ur using a lot of force to move
I can give you a search engine that could help you with all ir hw its called socratic it uses everything on the internet to search for answers it’s literally a search engine
It is the number in front of the equation