Two cups of tea have the same mass and temperature. They are combined into one larger pot. The larger pot starts at the same temperature as the tea. The larger pot of tea has the same temperature as the original cups of tea. The amount of thermal energy in the larger pot of tea is aboutthe amount of thermal energy in each of the smaller cups of tea. A. same as B. twice C. one-half​

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.

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement