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One was downed with an AIM-120, and one with an AIM-9 Sidewinder. [10] In 1998 and 1999 AMRAAMs were again fired by USAF F-15 fighters at Iraqi aircraft violating the No-Fly-Zone, but this time they failed to hit their targets. During spring 1999, AMRAAMs saw their main combat action during Operation Allied Force, the Kosovo bombing campaign.
g is the gravitational acceleration—usually taken to be 9.81 m/s 2 (32 f/s 2) near the Earth's surface; θ is the angle at which the projectile is launched; y 0 is the initial height of the projectile; If y 0 is taken to be zero, meaning that the object is being launched on flat ground, the range of the projectile will simplify to:
This is due to Newton's third law of motion (For every action, there is an equal and opposite reaction). Consider a system where the gun and shooter have a combined mass m g and the bullet has a mass m b. When the gun is fired, the two masses move away from one another with velocities v g and v b respectively.
One has an upgraded motor to extend a range at high altitudes to as much as 120–160 km; it is known as the RVV-AE-PD (Povyshenoy Dalnosti—improved range). This variant has been test-fired and uses a solid-fuel ramjet engine. Its range puts it in the long-range class and is equivalent in range to the AIM-54 Phoenix.
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Cavendish's stated aim was the "weighing of Earth", that is, determining the average density of Earth and the Earth's mass. His result, ρ 🜨 = 5.448(33) g⋅cm −3, corresponds to value of G = 6.74(4) × 10 −11 m 3 ⋅kg −1 ⋅s −2. It is surprisingly accurate, about 1% above the modern value (comparable to the claimed relative ...
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