Problem 7.45 Constants Determine the magnitude of the momentum of the second (recoiling) nucleus. Express your answer to three significant figures and include the appropriate units. 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 Pe = 9.06x10-23 kg - m/s and HA 8 ? Pu = 6.45x10-23 kg . m/s , respectively. (Figure 1) Panc Value Units Figure