3. if a force is a push or pull on an object
by another object that is touching it,
then...
Physics, 22.10.2019 15:50 vdestiny858
3. if a force is a push or pull on an object
by another object that is touching it,
then it is called a(n)
Answers: 1
Physics, 21.06.2019 23:00
Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?
Answers: 1
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 15:00
What happens when a rubber rod is rubbed with a piece of fur?
Answers: 1
Computers and Technology, 26.11.2019 05:31
Computers and Technology, 26.11.2019 05:31