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.
July 2-5, 2015. Spend your 4th of July holiday in New Orleans to celebrate the talent of ESSENCE Festival. New Orleans biggest Fourth of July party happens on the Mississippi River with Go Fourth of the River, a celebration that includes a Dueling Barges fireworks show and patriotic music.