The order of elements in the periodic table is based on a. the number of protons in the nucleus. c. the number of neutrons in the nucleus. b. the electric charge of the nucleus. d. atomic mass

With these questions , 15 pts & brainliest

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.

What causes the formation of ocean currents?