![subject](/tpl/images/cats/User.png)
Engineering, 31.03.2020 00:42 bdjxoanbcisnkz
The heat transfer coefficient for hydrogen flowing over a sphere is to be determined by observing the temperature–time history of a sphere fabricated from pure copper. The sphere, which is 20 mm in diameter, is at 75°C before it is inserted into the gas stream having a temperature of 27°C. A thermocouple on the outer surface of the sphere indicates 55°C 97 s after the sphere is inserted into the hydrogen. Assume and then justify that the sphere behaves as a spacewise isothermal object and calculate the heat transfer coefficient
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 03.07.2019 14:10
When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point
Answers: 3
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
Answers: 3
You know the right answer?
The heat transfer coefficient for hydrogen flowing over a sphere is to be determined by observing th...
Questions
![question](/tpl/images/cats/fizika.png)
Physics, 28.03.2022 14:00
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.03.2022 14:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 28.03.2022 14:00
![question](/tpl/images/cats/mat.png)
Mathematics, 28.03.2022 14:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.03.2022 14:00
![question](/tpl/images/cats/mat.png)
Mathematics, 28.03.2022 14:00
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 28.03.2022 14:00
![question](/tpl/images/cats/biologiya.png)
Biology, 28.03.2022 14:00
![question](/tpl/images/cats/en.png)
English, 28.03.2022 14:00
![question](/tpl/images/cats/mat.png)
Mathematics, 28.03.2022 14:00
![question](/tpl/images/cats/en.png)
English, 28.03.2022 14:10