What type of device contains an electromagnet that rotates between the poles of a magnet? (electrical to mechanical energy) HELP

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Patricia is trying to compare the average rainfall of new york to that of arizona. a comparison between these two states for the months of july through september would best be measured in

If a star is moving toward earth, it is