Engineering, 13.10.2020 05:01 janeliles
Which is currently the most supported theory about the future of the universe?
a. The universe could remain exactly as it is today.
b. The universe may continue to expand.
c. Stars could burn out, causing the universe to become dark and cold.
d. Gravity could pull galaxies back together, causing a reverse of the big bang.
Answers: 3
Another question on Engineering
Engineering, 04.07.2019 18:10
An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet
Answers: 3
Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Engineering, 04.07.2019 18:20
Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false
Answers: 3
Engineering, 04.07.2019 18:20
Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]
Answers: 1
You know the right answer?
Which is currently the most supported theory about the future of the universe?
a. The universe coul...
Questions
Mathematics, 05.04.2021 20:10
Mathematics, 05.04.2021 20:20
Mathematics, 05.04.2021 20:20
Mathematics, 05.04.2021 20:20
Mathematics, 05.04.2021 20:20
Mathematics, 05.04.2021 20:20
Mathematics, 05.04.2021 20:20
English, 05.04.2021 20:20
Mathematics, 05.04.2021 20:20
