Answer Explanation:
THERE ARE DIFFERENT PROCESS TECHNIQUES FOR MANUFACTURING PLASTIC BOTTLES:
- EXTRUSION BLOW MOLDING PROCESS: In this process a mold cavity composed of two halves, closes around the parison and pinches off one end. compressed air expands the parison to conform against the cold mold cavity walls
- INJECTION BLOW MOLDING: The process of injection blow modeling is used for the production of hollow plastic bottles
- STRECH BLOW MOLDING: Stretch blow molding uses either the injection or extrusion blow molding process as a basic foundation
I think the answer is B) 1 a.m. and 5 a.m. I very sorry if it is wrong plz let me know if it is wrong bro thankx
Given Information:
Initial temperature of aluminum block = 26.5°C
Heat flux = 4000 w/m²
Time = 2112 seconds
Time = 30 minutes = 30*60 = 1800 seconds
Required Information:
Rise in surface temperature = ?
Answer:
Rise in surface temperature = 8.6 °C after 2112 seconds
Rise in surface temperature = 8 °C after 30 minutes
Explanation:
The surface temperature of the aluminum block is given by
Where q is the heat flux supplied to aluminum block, k is the conductivity of pure aluminum and α is the diffusivity of pure aluminum.
After t = 2112 sec:
The rise in the surface temperature is
Rise = 35.1 - 26.5 = 8.6 °C
Therefore, the surface temperature of the block will rise by 8.6 °C after 2112 seconds.
After t = 30 mins:
The rise in the surface temperature is
Rise = 34.5 - 26.5 = 8 °C
Therefore, the surface temperature of the block will rise by 8 °C after 30 minutes.
The answer is B because it could be feasible but it’s not a need it and you got a time frame but it’s not a requirement and it doesn’t have to be unique.