Two identical cells of negligible internal resistance, are connected in (a) series and in (b) parallel with each other. find the ratio of currents through a load resistance r in the two cases

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.

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

Which of the following is the largest disadvantage of about half of the electricity in the united states comes from burning