Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

To create electromagnetic induction, which of the following has to move? a. a wire b. a magnet c. a transformer d. either a or b

An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector   between points f and g.

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.