[填空题]
A free neutron can decay intvr fa2jbdh:9 :o a proton, an electron, and a neutrino. Assume vex qx2ale4j:))ld o*the neutrino's rest mass is zero, and the other masses can be found in the Table inside the front cover. Determine the total ki4le ad)ov*l)xq2 ej:xnetic energy shared among the three particles when a neutron decays at rest. KE = MeV
