Dr. Trout has noticed that salmon in his fish hatchery seem to enjoy listening to the radio in his lab. The fish in the tank closest to the radio seem to grow larger. Dr. Trout decides that the more music he plays, the larger the fish must grow. To test his idea, he sets up 5 large ponds with 100 salmon in each pond. He places a loudspeaker at the middle of each pond and plays various amounts of music in each pond. He plays the same band, feeds the fish the same diet, and keeps water conditions in all tanks exactly the same. After 10 weeks, he ends the trial and takes the average mass of the fish in each pond.

What is the RANGE of average fish mass in Dr. Trout's experiment?

the answer is to check all of them! they all apply well at least i think so!

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

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.