uppose that white light strikes a flat piece of flint glass in air, coming in at an angle of 60 degrees to the surface (30 degrees from the normal or perpendicular). The index of refraction of this dense glass for red light is 1.710, for green light is 1.723, and for blue light is 1.735. What is the order of colors you would see in the refracted light inside the glass as they leave the surface

Explanation:

Snell's law for index of refraction of a medium is as follows .

sin i / sin r = μ

i is angle of incidence  , r is angle of refraction and μ is refractive index.

sin r = sin i / μ .

As μ for blue light is greatest , angle of refraction for blue light will be least . Similarly  , angle of refraction will be maximum for red light .

So maximum deviation in the direction of light will occur in blue light due to least angle of refraction because

deviation angle = angle of incidence - angle of refraction .

So the order of light from inward towards surface

= blue , green , red .

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.