If a closed series circuit has a voltage of 12 v and r1 = 4 ω and r2 = 2 ω, what is the current running through r1 and r2?
a. the current in r1 is 2 a and the current in r2 is 2 a.
b. the current in r1 is 3 a and the current in r2 is 6 a.
c. the current in r1 is 6 a and the current in r2 is 2 a.
d. the current in r1 is 6 a and the current in r2 is 6 a.

Abanked road comer of radius 146 m is to be constructed. if the comer is designed for vehicles moving with a speed of 20.0 m/s, what should the banking angle be, in units of degrees?

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.

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.