Lake Titicaca
Because the air pressure drops the higher you go. If the cabin wasn't pressurised to ground level - all the passengers (and crew) would eventually suffocate !
Passenger airplanes usually fly around 30,000-38,000 feet. Small aircrafts fly lower and military aircrafts can fly higher.
about 600mph at about 70,000 feet and 1,200mph at higher heights.
abraham lincoln
There are many types of teachers in a higher education and collegiate setting. They can range from adjunct professor to Andelot meaning the professor in charge of the department.
A professor is higher in rank than a doctor; it would be more appropriate to address them as professor if they hold the title.
Jet airplanes fly at high altitudes because it is more fuel efficient. Flying at higher altitudes uses less fuel than flying at lower altitudes.
Stainless steel is used to make firewalls on airplanes because of its high melt point. It does not melt until it reaches 2,600 degrees Fahrenheit, which is higher than most fires.
Tine is not commonly used in any substantial percentage in the bodies of airplanes, because metals with higher strength to mass ratios, such as aluminum and magnesium are preferred. Tin could be used for specialty purposes, such as bearings.
Yes, there are many ways that you can become a career college professor. You have to go to college and receive a master's degree or higher, to teach in a university. You can have a bachelors degree or higher to teach in a business school or junior college.
It's not that business professors make more than other professors. It depends on the length of time with the college or university, and remember there are different levels of professorship to include the following common ranks from highest to lowest. * Professor ("Named Chair") * Professor ("Full Professor") * Associate Professor * Assistant Professor * Instructor (sometimes "Lecturer")
So passengers will feel more comfortable. Higher interior pressure means more economical altitude.