The angle between reflected ray and the normal line is 1. Angle of incident
2. Angle of reflection
3. Angle of refraction

What are the starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?

What are known as the properties of substances that describe a substance et does not change that substances?