The isospin and strangeness determine this quantity for hadrons in a formula developed by Okubo and Gell-Mann. When this quantity equals zero, the Dirac equation reduces to the Weyl [vile] equation. Spontaneous (-5[1])symmetry breaking creates bosons with a zero value of this quantity according (-5[1])to Goldstone’s theorem. In a formula named for this quantity, Coulomb, asymmetry, and pairing terms are used to represent the liquid drop model; that (*) “semi-empirical” formula is used to calculate the nucleus’s namesake “defect” in this quantity. A Millennium Prize problem involves determining whether Yang-Mills theory has a “gap” in this quantity. Kinetic energy equals momentum squared over 2 times this quantity. For 10 points, Albert Einstein stated that what quantity equals energy (-5[1])over the speed of light (10[1])squared? (10[1]0[1])■END■