A bullet with a mass of 10. g is fired from a rifle with a barrel that is 85 cm long.   a.     Assuming that the force exerted by the expanding gas to be a constant 5500 N, what speed would the bullet reach?

B) raising the temperature and reducing the volume of the gas.|-/ 

That big glowy thing in the sky is called the sun

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.