Density, density, density.(a) a charge-304e is uniformly distributed along a circular arc of radius 6,70 cm, which subtends an angle of 519. what is the linear charge density along the arc? (b) a charge 304e is uniformly distributed over one face of a circular disk of radius 2.80 cm. what is the surface charge density over that face? (c) a charge-304e is uniformly distributed over the surface of a sphere of radius 4.20 cm, what is the surface charge density over that surface? (d) a charge-304e is uniformly spread through the volume of a sphere of radius 4.90cm. what is the volume charge density in that sphere?

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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.

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