Initially, the rotation speed of the ride is high enough, so Einstein will not slip on the wood plank. Once the rotation speed starts to decrease, the normal force that provides the centripetal acceleration for the system decreases too, and eventually the friction between Einstein and the plank is small enough so Einstein will start slipping on the plank. Use Newton's 2nd law to balance forces acting on Einstein and evaluate the static friction coefficient. g

Which of the following statements is true about women and minorities in early psychology? a. in the early 20th century, numerous graduate schools recruited women and minorities to study psychology. b. opportunities in higher education were limited for women and minorities in the early 20th century due to discrimination. c. despite some obstacles, there were numerous employment opportunities for women and minorities. d. women and minorities were often selected to do academic research in an effort to make the field more diverse.

Acar moves at 12m/s and coasts up a hill with a uniform acceleration of -1.6m/s2. how far has it traveled after 6.0s?

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.