How does the average speed of the atoms in a substance compare to the average speed of the atoms in a substance with a lower temperature?

Gunpowder residue is most likely to show up where on a shooters hands

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

Hen a gfci receptacle device is installed on a 20-ampere branch circuit (12 awg copper), what is the minimum volume allowance (in cubic inches) required for conductor fill for each conductor in the outlet box?