In this model of the rock cycle, a represents rock and b represents the process of . nextreset

They probably meant:

In this model of the rock cycle, A represents_____rock and B represents the process of_____.

First blank: igneous, metamorphic, sedimentary

Second blank: melting, sedimentation, weathering

I think the answer is metamorphic, weathering but I'd really like a confirmation.

metamophic and weathering

Explanation:

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.