What does the diagram show about phases and the phase of the substance as it is heated? Check all that apply. The substance is a gas at more than 2,000°C.

The particles are close together but move in different directions between 0°C and 2,200°C.

The attractions between the particles increase in region 2.

The speed of the particles increases in region 5.

The substance does not exist as a solid.

What is the length x of the side of the triangle below? (hint: use the cosine function)

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

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.