Which statements accurately describe dmitri mendeleev’s contributions to the development of the periodic table? check all that apply. mendeleev wrote the first modern chemistry textbook. mendeleev produced the first orderly arrangement of known elements. mendeleev ordered the elements by increasing atomic number. mendeleev used patterns to predict undiscovered elements. mendeleev accounted for variations resulting from isotopes.

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.