Engineering, 01.11.2020 23:40 Pattondestiny
A Boeing 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 port where the aircraft initially touches the ground?
Answers: 1
Engineering, 03.07.2019 14:10
Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.
Answers: 3
Engineering, 04.07.2019 18:20
Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.
Answers: 1
Engineering, 04.07.2019 19:10
What is a monomer? how do they form a ploymer from the view point of chemical bonding?
Answers: 1
Engineering, 04.07.2019 19:10
What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces.a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.
Answers: 1
A Boeing 777 lands at Chicago O'Hare Airport (668 m elevation) where the pressure is 98.8 kPa. This...
Computers and Technology, 17.03.2020 04:29
English, 17.03.2020 04:30
Mathematics, 17.03.2020 04:30
Mathematics, 17.03.2020 04:30
Mathematics, 17.03.2020 04:30