A hollow metal sphere has 6 cmcm and 11 cmcm inner and outer radii, respectively. The surface charge density on the inside surface is −150nC/m2. The surface charge density on the exterior surface is +150nC/m2. What is the strength of the electric field at point 4 cm from the center?

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

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.

A( developed during the process of technology design