Aboeing 777 lands at chicago o'hare airport (668 m elevation) where the pressure is 98.8 kpa. this 777 wing has a coefficient of lift of 1.46 and its wing area is 4618.8 ft^2. when the plane left st. louis, its mass was 225,982 kg. note that kilograms is mass not weight, so you need to convert it. during the flight to chicago, 7,534 liters of fuel was used, where the jet fuel weighs 0.781 kg/l.
what is the velocity in miles-per-hour at the point where the aircraft initially touches the ground?

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.