In the treatment of space and narrative, explain how Ghiberti's Isaac and Sons recall painting techniques.

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

What determines the amount of inertia an object has

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.