Air enters a nozzle steadily at 280 kPa and 77 oC with a velocity of 50 m/s and exits at 85 kPa and 320 m/s. The heat losses from the nozzle to the surrounding medium at 20 oC are estimated to be 3.2 kJ/kg. Determine (a) the exit temperature and (b) the total entropy change for this process
Answers: 1
Physics, 21.06.2019 16:10
Alow cost, low earth orbit (leo) satellite is to be fabricated at a university, for subsequent launch by rocket. what are the constraints and objectives for selection of a material suitable for the satellite bus (i.e. the structure)? explain each in brief. (15 marks) b)suggest sources of data which could support the selection of materials for applications in space. (5 marks) c) set weights for the objectives listed in (2a) using the digital logic method. (5 marks)
Answers: 1
Physics, 22.06.2019 13:30
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
Physics, 22.06.2019 14:00
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
Physics, 22.06.2019 17:30
Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.
Answers: 1
Air enters a nozzle steadily at 280 kPa and 77 oC with a velocity of 50 m/s and exits at 85 kPa and...
Chemistry, 11.05.2021 14:00
History, 11.05.2021 14:00
History, 11.05.2021 14:00
Mathematics, 11.05.2021 14:00
English, 11.05.2021 14:00
Social Studies, 11.05.2021 14:00
Mathematics, 11.05.2021 14:00
History, 11.05.2021 14:00
Mathematics, 11.05.2021 14:00
Computers and Technology, 11.05.2021 14:00
History, 11.05.2021 14:00
Mathematics, 11.05.2021 14:00