How much kinetic energy does a care 1000 kg car moving at 7 m/s have? a. 24500 j b. 7000 j c. 3500 j d. 24.5 j

Ann walks 80 meters on a straight line 33 ∘ north of east starting at point 1. draw ann's path. represent ann's walk with a vector of length 80 meters. draw the vector starting at point 1. the length given in the display is in meters.

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.

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is