In addition, sensitivity analysis was performed to assess whether effect modification of particulate matter (PM 2.5) in the prior day changed Kp index effects on daily deaths after adjusting for confounders. We employed a two-step meta-analysis approach, in which we estimated city-specific and season-stratified mortality risk associated with a GMD parameter (Kp index) in 263 U.S. cities to assess the effects of GMD on daily deaths of total, CVD, myocardial infarction (MI), and stroke. We conducted a large epidemiological study in 263 U.S. In time, missiles will be faster, more precise, and will travel greater distances.Short-term geomagnetic disturbances (GMD) driven by the quasi-periodic 11-year cycle of solar activity have been linked to a broad range of adverse health effects, including cardiovascular diseases (CVD) and total deaths. Note though that a missile has to travel only faster than it target is able to move or to defend itself. Slower missiles launched by rocket launcher supported by a man's shoulder only went 300 ft/s or 90 m/s. This was more than sufficient to take out the fastest fighter planes traveling at 2200 mph or 980 m/s. The Super 530 can travel at Mach 4.5 or 1500 m/s. In 1980 the fastest missile was made by a French company. They are designed to take out tanks and other armored vehicles. These missiles are known as kinetic energy missiles. It is expected to fly at over 2100 m/s (3600 mph). Planned for 2015 are high-speed missiles that will be used to take out enemy vehicles through sheer momentum. This missile will be used for defense and may have a role similar to that of the Patriot missile. Using modern day electromagnetic power, a missile can be launched at Mach 10 (ten time the speed of sound), this is equivalent to 3430 m/s (or 7,500 mph). Thousands of types of missiles exist for various purposes, they all travel at different speeds. This produces an equal amount of thrust that pushes the missile forward. This is directed out the exhaust nozzle at the back of missile with a large force. The rocket is able to produce high pressure gases in the combustion chamber. Rockets operate on the principle of Newton Third Law - for every action there is an equal an opposite reaction. An ideal propulsion fuel generates a lot of thrust but is light weight. The propellant charge (also know as the grain) also contains chemical elements which allow for the complete burning of the solid propellant. Solid propelled missiles contain solid a propellant which is burned in a combustion chamber.
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