The image shows a dam. A large dam has point X behind it where the water level is high and point Y below it to, which the water flows.

Which descriptions best fit the labels?

X: kinetic energy
Y: potential energy
X: potential energy
Y: kinetic energy
X: mechanical energy
Y: electrical energy
X: electrical energy
Y: mechanical 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

Hydrogen and helium are both members of?

Most of the volume of an atom is occupied by the