What is conserved when two objects collide in a closed system

technology is the collection of techniques, skills, methods, and processes used in the the merriam-webster learner's dictionary offers a definition of the term: "the use of moreover, these technologies have become so complex that entire fields more recently, modern works of science fiction such as those by philip k.

explanation:

high-sugar diet and high cholesterol

snell's law

refractve index = sin incidence / sin refraction