Prove that in the absence of external forces, the total angular momentum (defined as l= r xp, ) of an n-particle system is conserved. hint: you will need to assume that the interparticle forces are central; that is, faß acts along the line joining particles a and b.

Which energy transformation occurs in the core of a nuclear reactor? nuclear energy mechanical energy nuclear energy - thermal energy thermal energy -- nuclear energy mechanical energy - nuclear energy

Which of the following changes to a pipe would increase the conductance by a factor of 12? 1.quadrupling the length and tripling the radius.2.reducing the length by a factor of and doubling the radius.3.tripling the length and reducing the radius by a factor of .4.reducing the length but a factor of and doubling the radius.

Which best describes the difference between internal and thermal energy?