A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. The…

A radioactive nucleus at rest decays into a
second nucleus, an electron, and a neutrino. The electron and neutrino are
emitted at right angles and have momenta of 9.6 X 10_23kgm /s and 6.2 X 10_23kg
m/s, respectively.
Determine the magnitude and the direction of the momentum of the second
(recoiling) nucleus.