The beam of a light spreads out after leaving the flashlight. the beam grows wider and wider. this is best explained by a) diffraction b) interference c) reflection d) refraction

Diffraction

Explanation:

The beam of light spreads out due to diffraction because the light waves bend at the edges of very small obstacles and pass through narrow apertures. It is accompanied by interference of waves. Hence, the beam of a light spreads out after leaving the flashlight. The beam grows wider and wider. This is best explained by A) diffraction

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.

the closer the planet is to the sun, the larger the gravity