![subject](/tpl/images/cats/User.png)
Engineering, 11.10.2019 04:30 audrey435
An ideal gas goes through an expansion process. which process creates more work, a polytropic process with n=1.25 or an isothermal process (hint: for an ideal gas, pv=nrt, and in a closed system both n and t are fixed, so n=? )
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:20
Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k
Answers: 3
You know the right answer?
An ideal gas goes through an expansion process. which process creates more work, a polytropic proces...
Questions
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.07.2020 07:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.07.2020 07:01
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/fr.png)
French, 28.07.2020 07:01
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 28.07.2020 07:01
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.07.2020 07:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 28.07.2020 07:01
![question](/tpl/images/cats/biologiya.png)
Biology, 28.07.2020 07:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.07.2020 07:01
![question](/tpl/images/cats/mat.png)
Mathematics, 28.07.2020 07:01
![question](/tpl/images/cats/mat.png)