Please help will mark brainliest

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )

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

because if the tool that you are using is not balanced it there would be false mass.

technology is the application of the knowledge gained by science.