Two 3.00 cm × 3.00 cm plates that form a parallel-plate capacitor are charged to ± 0.708 nc . part a what is the electric field strength inside the capacitor if the spacing between the plates is 1.30 mm ?

Explanation:

The electric field strength between the plates of a parallel plate capacitor is given by

where

is the surface charge density

is the vacuum permittivity

Here we have

is the area of the plates

is the charge on each plate

So the surface charge density is

And now we can find the electric field strength

ammonium chloride & tallow

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.