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.
Other holidays in June 2017 in the United States. 1  Statehood Day â Thursday, June 1, 2017. 2  Jefferson Davis Birthday â Saturday, June 3, 2017. 3  Pentecost â Sunday, June 4, 2017. 4  Whit Monday â Monday, June 5, 2017. 5  D-Day â Tuesday, June 6, 2017. 6  Trinity Sunday â Sunday, June 11, 2017. 7  Kamehameha Day â Monday, June 12, 2017.