you have the soda can heat engine outside on a hot day. you put a Reflective source underneath like solar oven. In fair the waves provide heat to the soda can and reflecttive Surface through radiation. What provides the original source of infared waves to the Earth?​

The two required components for a generator

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.

Most short-period comets do not have randomly oriented orbits because