Engineering, 18.06.2020 16:57 Csoard2004

The volume of 1.5 kg of helium in a frictionless piston-cylinder device is initially 6 m3. Now, helium is compressed to 2 m3 while its pressure is maintained constant at 200 kPa. Determine the initial and final temperatures of helium, as well as the work required to compress it, in kJ.

Answers: 2

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, bckyanne3

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

Answers: 1

continue

Engineering, 04.07.2019 19:20, carterdaw

Aseries piping system conveys methyl alcohol. the system consists of 70 m of 1- nominal pipe follow by 50 m of 2-nominal pipe, both schedule 40 commercial steel. the 1-nominal pipe contains 3 90° elbows (regular) anda fully open gate valve, all threaded. the pressure drop through the system is 150 kpa. determine the volume flow rate through the system that is horizontally laid.

Answers: 1

continue

Engineering, 04.07.2019 19:20, justicehernandez

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain

Answers: 2

continue

Engineering, 11.07.2019 01:10, Adithya27

The boeing 747 is an air plane often equipped with four pratt and whitney jt9d engines that can each offer 193.50 kn of thrust. the air plane has a cruise speed of 907 km/hour, and typical cruise altitudes are of 11 km where the air temperature is -56 °c and density is 0.36 kg/m^3. its coefficient of drag at cruise conditions is 0.031, using the total wing area of 511m^2 as the reference area. its maximum take-off mass is 333000 kg a) what is the plane's coefficient of lift during cruise at its maximum take-off mass? b) what percentage of maximum thrust is required to keep the plane cruising? c) what is the plane's maximum angle of ascent? use the coefficient of lift calculated in part a). the following may be of : a cos(x) + bsin(x) = r cos(x-a) where r = va2+52 and a = tan(b/a)

Answers: 2

continue

You know the right answer?

The volume of 1.5 kg of helium in a frictionless piston-cylinder device is initially 6 m3. Now, heli...