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Earth's mass has remained constant, and thus the gravitational pull at the surface has decreased over time; Earth's mass has grown with the volume in such a way that the surface gravity has remained constant; Earth's gravity at its surface has increased over time, in line with its hypothesized growing mass and volume.
Rationing, Propaganda, and then patriotism
Answer:
It is the deadliest terrorist attack in human history and the single deadliest incident for firefighters and law enforcement officers in the history of the United States, with 340 and 72 killed, respectively.
Explanation:
It's because Roman culture did not disappear because the traditions were kept alive by leaders in Constantinople.
You can see that many features in the city of Constantine is made based on the design that was taken from the Roman period and the interior usually filled with Roman artworks. Not only that, many ceremonies and celebrations is being done based on Roman tradition.
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Answer:
Wilbur and Orville Wright were American inventors and pioneers of aviation. In 1903 the Wright brothers achieved the first powered, sustained and controlled airplane flight; they surpassed their own milestone two years later when they built and flew the first fully practical airplane.
Always working on different mechanical projects and keeping up with scientific research, the Wright brothers closely followed the research of German aviator Otto Lilienthal. When Lilienthal died in a glider crash, the brothers decided to start their own experiments with flight. Determined to develop their own successful design, Wilbur and Orville headed to Kitty Hawk, North Carolina, known for its strong winds.
Wilbur and Orville set to work trying to figure out how to design wings for flight. They observed that birds angled their wings for balance and control, and tried to emulate this, developing a concept called “wing warping.” When they added a moveable rudder, the Wright brothers found they had the magic formula-on December 17, 1903, they succeeded in flying the first free, controlled flight of a power-driven airplaine. Wilbur flew their plane for 59 seconds, over a distance of 852 feet, an extraordinary achievement for their time.
The Wright brothers soon found that their success was not appreciated by all. Many in the press, as well as fellow flight experts, were reluctant to believe the brothers’ claims at all. As a result, Wilbur set out for Europe in 1908, where he hoped he would have more success convincing the public and selling airplanes.
Explanation:
I got the information on this site https://www.history.com/topics/inventions/wright-brothers