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The hbar symbol in quantum mechanics represents the reduced Planck constant, which is a fundamental constant that relates to the quantization of physical quantities in the microscopic world. It plays a crucial role in determining the behavior of particles at the quantum level and is essential for understanding the principles of quantum mechanics.
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What weapons were used in Vietnam War?
All US jets except for the B47 Stratojet and B58 Hustler were used in Vietnam. All US helicopters were used in the war. All US small arms from WWII to the M16 were used in the war. All US naval warships, excepting submarines, were used in the war, too include one battleship; the USS New Jersey. USN Riverine boats: Alpha boats, PBRs, Monitors, and Swift Boats. Tanks: M48A3 Patton medium gun tanks, M551 Sheridan tanks, M41 Walker Bulldog light tanks, Australian Centurion medium tanks, and M113 ACAVs. Artillery: From 105mm field guns to 175mm SPG (Self Propelled Guns) Recoilless Rifles: 57mm, 90mm and 106mm. Enemy (North Vietnamese Army & Air Force): MiG17, 19, 21 jets (used over North VN only) PT76 light tanks, T54 medium tanks SAMs & AAA (used in North Vietnam only)
How many different types of guns were there in the Vietnam War?
During the Vietnam War, the US Air Force flew the following jet fighter/bombers: F-100 Supersabre, F-101 Voodoo, F-102 Delta Dagger (same type as flown by President George Bush Jr. while serving with the Texas Air National Guard), F-104 Starfighter, F-105 Thunderchief, A-1 Skyraider (Propeller driven US Navy aircraft, as seen in the recent film release: "Rescue Dawn"), A-7 Corsair II (a US Navy jet fighter/bomber), and the F-4 Phantom II (also a US Navy fighter/bomber). Reconnaissance aircraft: U-2 Spyplane, SR-71 Blackbird, 0-1 Bird Dog, 0-2 Skymaster, OV-10 Bronco. GUNSHIPS: AC-130 SPECTRE, DC-3 Puff the Magic Dragon, C-119 Flying Boxcars. Support aircraft (Transports): C-123, C-130, C-5 Galaxy. BOMBERS: B-57 Canberra, B-52 Stratofortress Bombers. The US Navy/Marine Corps flew: A-1 Skyraider (Propeller driven), A-4 Skyhawk (type flown by Presidential Candidate McCain), A-6 Intruder (Film: "Flight of the Intruder), A-7 Corsair II, F-8 Crusader (The history channel's "Dog-Fight" series, THE LAST GUNFIGHTER), and the F-4 Phantom II (the last "Ace's" of the 20th Century). The US Army flew: Cobra Attack Helicopter (US's FIRST designed/built ATTACK helicopter to enter combat), UH-1 Huey helicopter, CH-47 transport helicopter, LOH Cayuse, and Kiowa scout choppers. US Army/US Marines Ground Units: M-48 Patton tanks, M-551 Sheridan tanks, M-113 APC/ACAV (Armored Personnel Carriers/Armored Cavalry Assault Vehicles), 155mm , 8", and 175mm Self Propelled Guns (SP's), towed artillery-105mm, 155mm; 106mm & 90mm Recoilless Rifles, 60mm, 81mm & 4.2" mortars. INFANTRY WEAPONS: M-14 rifles, M-16 rifles, M-60 machinguns, M-79 grenade launchers, M-203 combination rifle/grenade launcher, M-72 LAW (66mm Anti-Armor Weapon); hand grenades (smooth pineapple and baseball styles), claymore anti-personnel land mines, Colt .45 pistol, M-3 submachineguns (grease guns), .50 Browning Heavy Machineguns. The US Navy Riverine Forces (Brown Water Navy): Swift Boats (PCF-Patrol Craft Fast-all aluminum construction), PBR's (Patrol Boat River-all fiberglass construction), Alpha Boats (ASPB's-Assault Support Patrol Boats-all steel construction), MONITORs (Riverine Battleships).
What is the significance of expressing physical quantities in terms of hbar units?
Expressing physical quantities in terms of hbar units is significant because it allows for a more fundamental and universal understanding of quantum mechanics. The hbar unit, also known as the reduced Planck constant, is a fundamental constant in quantum mechanics that relates to the quantization of angular momentum and energy. By using hbar units, scientists can simplify calculations and compare results across different systems, leading to a more coherent and consistent framework for understanding the behavior of particles at the quantum level.
Why time isn't an operator in quantum mechanics?
Associated with each measurable parameter in a physical system is a quantum mechanical operator. Now although not explicitly a time operator the Hamiltonian operator generates the time evolution of the wavefunction in the form H*(Psi)=i*hbar(d/dt)*(Psi), where Psi is a function of both space and time. Also I don't believe that in the formulation of quantum mechanics (QM) time appears as a parameter, not as a dynamical variable. Also, if time were an operator what would be the eigenvalues and eigenvectors of such an operator? Note:A dynamical time operator has been proposed in relativistic quantum mechanics. A paper I found on the topic is; Zhi-Yong Wang and Cai-Dong Xiong , "Relativistic free-motion time-of-arrival", J. Phys. A: Math. Theor. 40 1987 - 1905(2007)
States that is imposible to know both the velocity and the position of a particle at the same time?
The heisenberg uncertainty principle is what you are thinking of. However, the relation you asked about does not exist. Most formalisms claim it as (uncertainty of position)(uncertainty of momentum) >= hbar/2. There is a somewhat more obscure and less useful relation (uncertainty of time)(uncertainty of energy) >= hbar/2. But in this relation the term of uncertainty of time is not so straightforward (but it does have an interesting meaning).
What is a quantum state and what is a quantum fluctuation?
A quantum state is exactly as it sounds. It is the state in which a system is prepared. For example, one could say they have a system of particles and at time, t=(some number), the particles are at position qi (qi is a generalized coordinate) and have a momentum, p=(some number). You then know the state of the system. There are other properties that can be know for a particle. You could create a system of particles with a particular angular momentum or spin, etcetera. - A quantum fluctuation arises from Heisenberg's uncertainty principle which is \delta E times \delta t is greater than or equal to \hbar and it is defined as the temporary change in the amount of energy in a point of space. This temporary change of energy only happens on a small time scale and leads to a break in energy conservation which then leads to the creation of what are called virtual particles.
Is Hbar barrels a brand name?
No. HBAR is an acronym forHeavy Barrel. Also, referred to as a bull barrel. These are common barrels used in match or competition model rifles.
What does HBAR stand for when talking about rifle barrels?
Heavy Barrel
Value of colt ar15 hbar?
100-1000 USD or so
What is the best things to put on an aug hbar mw2?
foregrip only
Did any colt sporter competition hbar have a bayonet lug?
Yes
Colt AR-15 A2 hbar sporter 223?
600-1200
What does hbar mean?
HBAR is an abbreviation for "heavy barrel". It refers to a thicker-than-standard barrel profile and one that is typically longer for the purpose of sustained fire. They are often affixed to rifles that have been converted to machine guns.
What is the value of an ar-15 match hbar 223?
100-1000 USD or so
