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.
The Story of the Fourth of July. The Declaration of Independence. We celebrate American Independence Day on the Fourth of July every year. We think of July 4, 1776, as a day that represents the Declaration of Independence and the birth of the United States of America as an independent nation.But July 4, 1776 wasn't the day that the Continental Congress decided to declare independence (they did that on July 2, 1776).It wasnât the day we started the American Revolution either (that had happened back in April 1775).ut July 4, 1776 wasn't the day that the Continental Congress decided to declare independence (they did that on July 2, 1776). It wasnât the day we started the American Revolution either (that had happened back in April 1775).