Engineering, 30.09.2019 20:00 kaikao17801
Engineers are trying to create artificial "gravity" in a ringshaped space station by spinning it like a centrifuge. the ring is 171 m in radius. how quickly must the space station turn in order to give the astronauts inside it apparent weights equal to their real weights at the earth's surface? use g=9.81 m/s2.
Answers: 1
Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
Answers: 3
Engineering, 04.07.2019 18:10
Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.
Answers: 1
Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
Engineers are trying to create artificial "gravity" in a ringshaped space station by spinning it lik...
Mathematics, 13.07.2019 16:40
Mathematics, 13.07.2019 16:40
Biology, 13.07.2019 16:40
History, 13.07.2019 16:40
Mathematics, 13.07.2019 16:40
English, 13.07.2019 16:40
Mathematics, 13.07.2019 16:40
History, 13.07.2019 16:40
Mathematics, 13.07.2019 16:40
Mathematics, 13.07.2019 16:40