As a crate slides down an inclined rough surface, its total mechanical energy a) increases, b) might decrease or increase depending on size of slope angle, c) decreases, d) might increase or decrease depending on the friction coefficient is, or e) remains constant.

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward