No
Certified Ceiling range from 41,000 to 51,000 feet. The link below has certified ceilings for specific jets.
2.6463283674893 milligrams = 300,000,000,000 jumbo jets
For the same reason that any aircraft can fly: the force due to lift is greater than the force due to gravity.
Yes, Mount Everest is up in the sky. It is at the same height that big jumbo jets fly at.
"Jumbo jets" are planes that are bigger than normal airliners. The 747 and the A380 would be jumbo jets. A 767 is a normal airliner, so no it's not a jumbo jet.
Under the wing
Human Edge - 2001 Super Jumbo Jets was released on: USA: 2001
Many jumbo jets are being made by Boeing and some by Airbus.
Boeing 747.
Any major airport.
it depends, pilots fly airplanes at different altitudes depending on the weather systems around the area at the time. Most large aircraft or jumbo jets want to fly at altitudes exceeding 25,000 feet because at higher altitudes jumbo jets burn less fuel to go the same distance that it would take if it were flying at a lower altitude. I would estimate that passenger planes fly somewhere between 30,000 feet and 40,000 feet. Jumbo jets can't fly much higher because the air will become so thin that they can't climb and more. And much lower will require more fuel because the air is more dense.