Will is learning about a new kind of plastic used to make models. He learns that infrared light is absorbed by the plastic, X-ray light is transmitted through the plastic, and visible light is reflected off the plastic. Will wonders if the plastic will melt if he shines the lights on it. Can light cause the plastic to melt? Why or why not? Does it matter what type of light he shines on the plastic?

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.