Asolid disk of mass m and radius r is moving with a constant angular velocity of w when an external torque begins to slow the disk down. it goes through exactly x revolutions before coming to a stop. a. derive an expression for the net torque applied to the disk. express your answer in terms of the givern variables and fundamental universal constants b. if the force causing the torque had been applied at a ½ the distance, by what factor would the total revolutions completed before stopping change?

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience. b. report the adverse drug experience to the irb only if there are several other occurrences. c. report the adverse drug experience as part of the continuing review report. d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.