Physics, 31.01.2020 12:57 Pipemacias9995
If you want to stop the current flow through device 3 in the circuit shown above, which one of the following single switches should you open?
a. switch s4
b. switch s3
c. switch s2
d. switch s5
Answers: 3
Physics, 22.06.2019 03:30
As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.
Answers: 3
Physics, 22.06.2019 10:00
Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?
Answers: 1
If you want to stop the current flow through device 3 in the circuit shown above, which one of the f...
Mathematics, 28.03.2021 02:20
Mathematics, 28.03.2021 02:20
Mathematics, 28.03.2021 02:20
Health, 28.03.2021 02:20
Mathematics, 28.03.2021 02:20
Advanced Placement (AP), 28.03.2021 02:20
Mathematics, 28.03.2021 02:20
Mathematics, 28.03.2021 02:20
Mathematics, 28.03.2021 02:20
Mathematics, 28.03.2021 02:20
Mathematics, 28.03.2021 02:20