Arecent study found that electrons that have energies between 3.45 ev and 20.9 ev can cause breaks in a dna molecule even though they do not ionize the molecule. if a single photon were to transfer its energy to a single electron, what range of light wavelengths could cause dna breaks?

Which best represents the law of conservation of mass ?

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.

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in