What is the distance of a person walking 20 m North, and then walks 20
meters South?

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.

Which wave is the result of amplification and produces a louder sound

Listed following are various physical situations that describe how light interacts with matter. match these to the appropriate category. 1) transmission? -visible light meets clear glass -visible light does not pass through a black wall -red light hits a red sweatshirt -light comes from your computer screen -cell phone signals pass through walls -blue light hits a red sweatshirt -white light hits a white piece of paper -light comes from a light bulb