A1.00-kg iron horseshoe is taken from a forge at 900∘c and dropped into 4.00 kg of water at 10.0∘c. assuming that no energy is lost by heat to the surroundings, determine the total entropy change of the horseshoe-plus-water system.

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