The uncertainty δp sets a lower bound on the average momentum of a particle in the nucleus. if a particle's average momentum were to fall below that point, then the uncertainty principle would be violated. since the uncertainty principle is a fundamental law of physics, this cannot happen. using δp=2.1×10−20 kilogram-meters per second as the minimum momentum of a particle in the nucleus, find the minimum kinetic energy kmin of the particle. use m=1.7×10−27 kilograms as the mass of the particle. note that since our calculations are so rough, this serves as the mass of a neutron or a proton.