Which of these correctly lists the order of the engineering process? A. Identify a need, research the background, make a plan, do the
work, evaluate the results, look for improvements.
B. Produce a product, improve it, identify a problem, make a solution,
test the solution.
C. Make a solution, identify a problem, research the problem, test the
solution, improve the product, test and evaluate, research, make a
plan, do the plan.

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

How many atoms of nitrogen are in the chemical formula ni(w on