A van drives east across Colorado on 1-70. It took the van 8 hours to cross the state, which is 770 km wide. What was the van's average velocity?
a. 96.25 km/hr East
b. 770 mi/hr West
c. 6160 km/hr West
d. .01 mi/hr East

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Explanation:

iron would move it is magnetic there is a mag field around the current in the wire

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.