Physics, 05.11.2019 04:31 sneckoencko
John’s mass is 95.6 kg, and barbara’s is 55.3 kg. he is standing on the x axis at xj = +10.9 m, while she is standing on the x axis at xb = +2.50 m. they switch positions. how far and in which direction does their center of mass move as a result of the switch? distance moved by center of mass =
Answers: 3
Physics, 22.06.2019 03:30, zahradawkins2007
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 08:00, osmanysalvador9
Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance
Answers: 3
Physics, 22.06.2019 17:30, brennae1801
The items in the following list are all units of matter. which is the smallest unit that retains the properties of the matter? a.) atom b.) compound c.) electron d.) element
Answers: 1
John’s mass is 95.6 kg, and barbara’s is 55.3 kg. he is standing on the x axis at xj = +10.9 m, whil...
English, 03.02.2021 20:30
Mathematics, 03.02.2021 20:30
Business, 03.02.2021 20:30
Mathematics, 03.02.2021 20:30
Spanish, 03.02.2021 20:30
Mathematics, 03.02.2021 20:30
Mathematics, 03.02.2021 20:30