Acircular copper disk of diameter d=10 cm rotates at frequency =1800 rev/min about an axis through its center and at right angles to the disk. a uniform magnetic field b of 10,000 gauss is perpendicular to the disk. what potential difference e develops between the axis of the disk and its rim?

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