Markeisha needs to create an electromagnet for her science project. She needs to create a magnet that can pick up
iron filings out of a mixture of substances. Which list of materials would best help Markeisha build her electromagnet?
glass rod, wire, battery
glass rod, string, battery
string, battery, metal nail
battery, metal nail, wire

Markeisha needs to use battery, metal nail, wire to create the electromagnet.

Explanation:

Battery will supply the current.

Metal nail will be the magnetic material that will be induced.

wire will be wound round the nail to form an induction current as the wire is connected to the terminals of the battery.

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

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.