Based on the energy band theory, answer the following questions: (a) what is energy bands? what is the fermi energy and the work function of a metal? (b) hybridization is a phenomenon that happens when some particular atoms are bonded together. a sp^3 hybridization usually happens in the case of silicon atoms, and this hybridization eventually results in the formation of two special energy bands. explain how this phenomenon happens, how it results in that two energy bands, and what are that two special energy bands?

Velocity is the speed of an object in a certain direction so you'd need to know speed and direction

D. engine coolant temperature

1) what is light? light is an electromagnetic wave visible to the human eye.  2) what is a reflection? the rebounding of a light ray when it hits a mirror.3) what is the incident ray? contacts the surface of an object.4) what is the reflected ray? bounces off a reflective surface.5) what is the normal ray? perpendicular to the surface of a mirror.6) what is the angle of incidence? an angle formed by the incident ray and the normal.7) what is the angle of reflection? an angle formed by the reflected ray and the normal.8) what is refraction? (bending.)9) what is a converging lens? bring together light rays that pass through.10) what is a diverging lens? spreads out light passing through.11) focal point? the real point where the refracted rays meet when the incident rays run parallel.