A student sits motionless on a stool that can turn friction-free about its vertical axis (total rotational inertia I ). The student is handed a spinning bicycle wheel, with rotational inertia I1, that is spinning about a vertical axis with a counterclockwise rotational velocity ?0. The student then turns the bicycle wheel over (that is, through 180?)

Determine the final rotational velocity acquired by the student.

Express your answer in terms of the variables I, I1, and ?0.

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.