In the pion, an up and an anti-down quark yield a particle of only 139.6 MeV of mass energy, while in the rho vector meson the same combination of quarks has a mass of 770 MeV! The masses of C and S are from Serway, and the T and B masses are from descriptions of the experiments in which they were discovered.
Independence Day 2018 is a federal holiday and falls on the fourth of July. The day of the week that the holiday falls on, changes each year. If July 4 is a Saturday, it is observed on Friday, July 3.
By KARINA SHEDROFSKY June 29, 2015. It's the 4th of July, America's birthday! Your number one excuse to eat burgers, drink beers and watch colorful explosions in the sky has arrived. So cancel your plans to flee to the Hamptons or the Jersey Shore because NYC is going to bring it this Independence Day.