1. make a key for everything you do 2. write in all atomic numbers in the top center of boxes 3. write in all element symbols, in the upper middle of boxes: a. write in blue ink, the two elements that are in the liquid state at stp b. write in red ink, all the elements that are in the gas state at stp c. write in pencil all the man-made elements (43, 61, 93 and above) d. write in black ink, all the elements that are naturally occurring solids at stp 4. write in all names of the elements, below element symbols 5. write in all average atomic mass (atomic weight), below element names

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

does anyone know or what?