Which screw would create a strong hold?

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.