A light bulb has a resistance of 144 Ω and is designed for use with a 120 V power supply. What is the power output of the light bulb? If the bulb is accidentally connected to a 240 V power supply, what would be the power output of the light bulb? Why might this be dangerous? What resistance would be needed in a light bulb that works on 240 V so that it would have the same brightness as the original light bulb?

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 : )

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.