Why would an aircraft unable to fly on moon
The engine of an aircraft is not powerful enough to overcome gravity and enter space.
Why do aircrafts flying at high altitude must have pressurize cabins
The pilot of an aircraft flying horizontally at a speed 1200km/hr.Observes that the angle of depression of a point on the ground changes from 30∘ to 45∘ in 15 sec.Find the height at which the aircraft is flying.
Why is the body of an AIDS patient unable to fight off even minor infections like common cold?