How can we balance the use of fossil fuels with other forms of energy?

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

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?