How much does a 2 kg apple weigh? enter in your numerical answer.

2,000 grams, 0.002 metric tons, not sure what you are asking for, but hopefully this helps

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 : )