A hollow cast iron calumn 200mm is external diameter with 20mm metal thickness is subjected to a compressive load of 60kN. Calculate the stress developed
in the
naterial
of the column, if it shortens by a length of 8m. Calculate the Young modules.​

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