Select the pair of bodies which are least alike in composition and size. a) moon and comet b) earth and venus c) uranus and neptune d) asteroid and meteor

A)moon and comet is the correct answer

A) moon and comet

Explanation:

A moon is a natural satellite of a planet. It is a rocky object that revolves around a planet. On the other hand, comet can be considered as a dirty snowball. They are mainly made up of dust and frozen gases. The comets are much smaller than the moons in the solar system. While the size of the moons can be around 5000 km in diameter, the nucleus of a comet can be just around 100km.

unlike poles attract

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.