We are looking at a narrow hydrogen lamp through a grating element. one of the lines in the hydrogen's spectrum has a wavelength of 656.45 nm. deuterium is hydrogen's isotope, and different isotopes emit light at slightly different wavelengths. the"same" line in deuterium's spectrum has a-656.27 what minimum number of slits n is required to resolve these two wavelengths in the second order? a. b. suppose we have a grating element with 500 slits/mm. find angular separation of these two lines - in the first order.

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.