Question details:

question details:
a spere of matter, of mass m andradius a, has a concentric
cavity of radius b, as shownbelow.
a.) sketch a curve of thegravitational force f exerted by the
sphere on a particle of massm, located at a distance r from the
center of the sphere, as afunction of r in the range 0 < = r < =
infinity. consider r = 0, b, and and infinity in particular.
b.) sketch the correspondingcurve for the potential energy
u(r) of thesystem.

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.

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car

How many neutrons does plutonium -196 with an atomic number of 78.