Problem 1.34 prove p that in the absence of external forces, the total angular momentum (defined as l = α r α × p α ) of an n-particle system is conserved. [hints: you need to mimic the argument from (1.25) to (1.29). in this case you need more than newton’s third law: in addition you need to assume that the interparticle forces are central ; that is f αβ acts along the line joining particles α and β. a full discussion of angular momentum is given in chapter 3.]

Calculate the minimum energy required to remove one proton from the nucleus 126c. this is called the proton-removal energy. (hint: find the difference between the mass of a 126c nucleus and the mass of a proton plus the mass of the nucleus formed when a proton is removed from 126c.) express your answer with the appropriate units. emin e m i n = nothing nothing request answer part b how does the proton-removal energy for 126c compare to the binding energy per nucleon for 126c, calculated using eb=(zmh+nmn−azm)c2?