Glycerin is poured into an open u-shaped tube until the height in both sides is 20cm. ethyl alcohol is then poured into one arm until the height of the alcohol column is 20cm. the two liquids do not mix. what is the difference in height between the top surface of the glycerin and the top surface of the alcohol?

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.