Link oa rotates with a counterclockwise angular velocity = 3 rad /s. determine the angular velocity of bar bc when = 20°.

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.