Bare free charges do not remain stationary when close together. to illustrate this, calculate the acceleration of two isolated protons separated by 3.73 nm (a typical distance between gas atoms). (enter the magnitude in m/s2.)

Acceleration,

Explanation:

It is given that,

Separation between the protons,

Charge on protons,

Mass of protons,

We need to find the acceleration of two isolated protons. It can be calculated by equating electric force between protons and force due to motion as :

So, the acceleration of two isolated protons is . Hence, this is the required solution.

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.