These quantities are replaced by closed line integrals of these quantities in a transformation that maps elliptical orbits onto straight-line trajectories. For a charged particle in a magnetic field, this quantity is modified by a term equal to the charge times the vector potential. The kinematic viscosity can be regarded as a diffusion coefficient for this quantity. If q is a cyclic coordinate, (15[1])then its corresponding one of these quantities (15[1])will be (*) conserved. These quantities and the generalized positions are the (10[1])coordinates of phase space, (10[1])and are the variables in Hamilton’s equations. As an example of Noether’s theorem, translational symmetry leads to the conservation of this quantity. Kinetic energy is equal to this (10[1])quantity squared divided (10[1])by 2m. (0[1]-5[1])For 10 points, name this quantity equal to mass (-5[1])times velocity. ■END■ (0[1])