If 500 j of energy were added to 1 kg of each of these samples , which would experience the least temperature increase

What does "which" mean ?  Does it mean to pick the right one out of a list that you're hiding from us ?

There's no way we can begin to make a choice if we don't know WHAT the samples are samples OF.

I CAN give you some info, however, that will probably help you make the right choice from the hidden list that you have.

If water is on the list, then that's the answer, EXCEPT if liquid ammonia is on the list.  Liquid ammonia is the only known substance on Earth that beats water as the answer to this question.

If neither liquid ammonia NOR water is on your secret list of samples, then you're on your own, Bunky.

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