Imagine you're in a completely dark room with no windows and you cut a 1-ft2ft2 round hole in the roof. When the Sun is high in the sky, about 100 WW of solar power enters the hole. On the floor where the light hits, you place a beach ball covered with aluminum foil, with the shiny side out. Discuss the illumination in your room compared with that of a 100-WW incandescent lightbulb?

Which statement correctly describes the relationship between frequency and wavelength?

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

You can melt ice by applying pressure because the solid/liquid line has a slope.