A real gas behaves least like an ideal gas under the conditions of

Higher temperature and Lower pressure

Explanation:

A real gas behaves more like an ideal gas at higher temperature and lower pressure, as the potential energy due to intermolecular forces becomes less significant compared with the particles' kinetic energy, and the size of the molecules becomes less significant compared to the empty space between them

What is a real gas?

A real gas is a gas that does not behave according to the assumptions of the kinetic molecular theory

What is an idea gas?

a hypothetical gas whose molecules occupy negligible space and have no interactions, and which obeys the gas law assumptions

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.

massxgravity x heght=weightxheight= pe

4900=490xh

h=10