A 0.057 kg tennis ball and a tennis racket collide. The racket has an initial momentum of negative 2.80 kg. m/s amd a final momentum of negative 1.97 kg. m/s. The ball has an initial momentum pf 0.015665kg. m/s. If you assume the collision is elastic what is the final velocity of the ball?

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

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.

If the new moon happens on january 15th, what shape will it be on february 6th?