What do you need to know to describe velocity?

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

Which composition of water moves to begin a deepwater current?

At what time will the interfering waves have an amplitudeof zero?