A donkey pulls a crate up a rough inclined plane at constant speed. which of the following statements concerning this situation is false? a) The gravitational potential energy of the crate is increasing.
b) The net work done by all the forces acting on the crate is zero joules.
c) The work done on the crate by the normal force of the plane is zero joules.
d) The donkey does "positive" work in pulling the crate up the incline.
e) The work done on the object by gravity is zero joules.

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

Compare the patterns of the two waves shown in the image. which statement is true about these waves?