![subject](/tpl/images/cats/fizika.png)
Physics, 18.08.2019 03:10 zacksoccer6937
At what angle above the horizontal is the sun if sunlight reflected from the surface of a calm lake is completely polarized?
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 21:50
Apossible explanation for a set of facts that can be tested by further investigation is called
Answers: 1
![question](/tpl/images/cats/fizika.png)
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
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 14:30
Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 15:00
Give an example in which the electrical energy changes to light energy
Answers: 1
You know the right answer?
At what angle above the horizontal is the sun if sunlight reflected from the surface of a calm lake...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 29.10.2020 21:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 29.10.2020 21:00
![question](/tpl/images/cats/istoriya.png)
History, 29.10.2020 21:00
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 29.10.2020 21:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 29.10.2020 21:00
![question](/tpl/images/cats/en.png)
English, 29.10.2020 21:00
![question](/tpl/images/cats/mat.png)
Mathematics, 29.10.2020 21:00
![question](/tpl/images/cats/fr.png)
French, 29.10.2020 21:00
![question](/tpl/images/cats/mat.png)
Mathematics, 29.10.2020 21:00
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 29.10.2020 21:00
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 29.10.2020 21:00