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.
Fourth of July Legal History: How Did It Become a Holiday? Independence Day, also known colloquially as the Fourth of July, celebrates America's formal declaration of independence from colonial rule. The Second Continental Congress officially adopted the final version of the Declaration of Independence on July 4, 1776.