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14 hours ago · Development Origins YF-16 and YF-17 prototypes being tested by the U.S. Air Force The United States Navy started the Naval Fighter-Attack, Experimental (VFAX) program to procure a multirole aircraft to replace the Douglas A-4 Skyhawk, the A-7 Corsair II, and the remaining McDonnell Douglas F-4 Phantom IIs, and to complement the Grumman F-14 Tomcat. Vice Admiral Kent Lee, then head of Naval Air ...
- 18 November 1978; 44 years ago
- F/A-18A/B/C/D: 1,480
14 hours ago · In general terms, the angular difference between satellites in each orbit is 30°, 105°, 120°, and 105° apart, which sum to 360°. [87] Orbiting at an altitude of approximately 20,200 km (12,600 mi); orbital radius of approximately 26,600 km (16,500 mi), [88] each SV makes two complete orbits each sidereal day , repeating the same ground ...
- United States
- Military, civilian
- Operational
- US Space Force
14 hours ago · Spin is an intrinsic form of angular momentum carried by elementary particles, and thus by composite particles such as hadrons, atomic nuclei, and atoms.: 183–184 Spin is quantized, and accurate models for the interaction with spin require relativistic quantum mechanics or quantum field theory.
14 hours ago · Definition and applicable elements Unless otherwise noted, this article describes the most stable form of an element in ambient conditions. [b] While arsenic (here sealed in a container to prevent tarnishing) has a shiny appearance and is a reasonable conductor of heat and electricity, it is soft and brittle and its chemistry is predominately nonmetallic. Nonmetallic chemical elements are ...
14 hours ago · Tucson (/ ˈ t uː s ɒ n / TOO-son; O'odham: Cuk Ṣon) is a city in and the county seat of Pima County, Arizona, United States, and is home to the University of Arizona.It is the second-largest city in Arizona behind Phoenix, with a population of 542,629 in the 2020 United States census, while the population of the entire Tucson metropolitan statistical area (MSA) is 1,043,433.
14 hours ago · 7 Azerbaijan (including Artsakh) 6,110 Democratic Republic of the Congo 6,283 Democratic Republic of the Congo 6,254 Democratic Republic of the Congo 8,342 8 Somalia 2,950 Syria 5,828 Syria 5,639 Mexico 7,168: 9 Mali 2,734 Somalia 3,532 Mali 4,793 Syria 6,211: 10 Iraq 2,436 Iraq 2,605 Burkina Faso 4,700 Mali 4,285: 11 Burkina Faso 2,268 Burkina ...
14 hours ago · Biblical criticism is the use of critical analysis to understand and explain the Bible without appealing to the supernatural. During the eighteenth century, when it began as historical-biblical criticism, it was based on two distinguishing characteristics: (1) the scientific concern to avoid dogma and bias by applying a neutral, non-sectarian, reason-based judgment to the study of the Bible ...
