Ahorizontal spring oscillator consists of a mass attached to a spring of constant 712 n/m. there is no friction. what mass (kg) should be attached for the oscillator to oscillate with a period of 0.47 seconds?

A110-pound person pulls herself up 4.0 feet. this took her 2.5 seconds. how much power was developed? 0.13 hp 0.32 hp 2.0 hp 3.1 hp

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

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.