Figure-7 shows the cross-section of a hollow cylinder of inner radius a = 4.00 cm and outer radius c = 9.00 cm. A uniform current density of 2.50 A/ cm2
flows through the cylinder parallel to its axis.
What is the magnitude of the magnetic field at = 2.00 cm?

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