As of 2013, the United States spends about $554.2 billion annually to fund its military forces, and appropriates approximately $88.5 billion to fund Overseas Contingency Operations. Put together, the United States constitutes roughly 39 percent of the world's military expenditures.
the number of protons in the nucleus of an atom of a particular element. In a neutral atom, the atomic number equals the number of electrons. See also atom, electron, proton.
The atomic number, #Z#, of any element, is the number of protons, positively charged nuclear particles, contained in the nucleus. The mass number (#235#) is the sum of the number of protons, AND the number of neutrons, NEUTRALLY charged nuclear particles. Note that only protons and neutrons contribute to atomic mass to any degree. You have #^235U#. If #Z=92# how many neutrons are there? And how did I know #Z=92#?