The cylinder rotates about the fixed z-axis in the direction indicated. if the speed of point a is va = 2.7 ft/sec and the magnitude of its acceleration is aa = 20.6 ft/sec2, determine the magnitudes of the angular velocity and angular acceleration of the cylinder. is knowledge of the angle θ necessary?

Which statements best describe the work of marie and pierre curie? check all that apply. they discovered radioactivity. they came up with the term “radioactivity.” they conducted experiments with uranium-containing minerals and pure uranium. they conducted experiments with uranium-containing minerals and photographic plates. they discovered two new radioactive elements.