A light wave traveling through medium 1 strikes a boundary with medium 2 at a 45° angle. The light then enters the second medium and refracts away from the boundary. What could the two mediums be?

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull

What must be in balance for temperatures to remain constant?

37.0 °c = °f (human body normal temperature)