In order to carry out this experiment properly, we would need to continuously measure both the mass of the LN2 and the temperature of the aluminum cylinder as it cools in the LN2 and integrate the above relation. This would be experimentally more complex to carry out! Fortunately, most of the LN2 boil-off occurs at the higher temperatures. Thus, using the approximation that cAl is independent of temperature (with a value ~900 J/kg-K), then from measuring the total mass of LN2 boiled off, the latent heat of vaporization of nitrogen is:

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.

Which situation will produce the greatest change of momentum

What is an aquifer for science class