Trevor places a mass on a spring. when he releases it, the mass and spring move in simple harmonic motion.

how could trevor increase the amplitude of the motion?

he could use a longer spring.
he could use a smaller mass.
he could use a stiffer spring.
he could pull the mass down farther.

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