Resistors r1, r2, and r3 are connected in parallel. r1 is 68 ohm and r2 is 93 ohm. the equivalent resistance of the parallel combination is 26-ohm. what is the resistance of r3?
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Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

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.

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?