![subject](/tpl/images/cats/User.png)
Engineering, 01.10.2019 23:10 ineedhelp2285
The heat transfer coefficient for hydrogen flowing over a sphere is to be determined by observing the temperatureātime history of a sphere fabricated from pure copper. the sphere, which is 20.0 mm in diameter, is at 80Ā°c before it is inserted into the gas stream having a temperature of 27Ā°c. a thermocouple on the outer surface of the sphere indicates 50Ā°c 97 s after the sphere is inserted into the hydrogen.(a) what is the value of the specific heat of the copper at the average temperature of the process, in j/kgĀ·k? (b) what is the value of the lumped thermal capacitance of the sphere, in j/k? (c) solve for the thermal time constant, in sec.(d) what is the value of the heat transfer coefficient, in w/m2Ā· k? (e) what is the value of the biot number?
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Burgers vector is generally parallel to the dislocation line. a)-true b)-false
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:20
Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.
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/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 26.02.2021 09:40
![question](/tpl/images/cats/biologiya.png)
Biology, 26.02.2021 09:40
![question](/tpl/images/cats/mat.png)
Mathematics, 26.02.2021 09:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 26.02.2021 09:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 26.02.2021 09:40
![question](/tpl/images/cats/mat.png)
Mathematics, 26.02.2021 09:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
English, 26.02.2021 09:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 26.02.2021 09:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 26.02.2021 09:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 26.02.2021 09:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/ekonomika.png)
Business, 26.02.2021 09:40