Given that D is the midpoint of AB and K is the midpoint of BC, which statement must be true?

Which description best characterization the motion of particles in a solid

As light moves from one material into the next, which of the following affects how much the light waves will refract, or bend? angle at which the ray strikes the medium color of the material density of the material temperature of the light wave

How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj