Answer:
Final length= 746.175 mm
Explanation:
Given that Length of aluminium at 223 C is 750 mm.As we know that when temperature of material increases or decreases then dimensions of material also increases or decreases respectively with temperature.
Here temperature of aluminium decreases so the final length of aluminium decreases .
As we know that
![\Delta L=L\alpha\Delta T](https://tex.z-dn.net/?f=%5CDelta%20L%3DL%5Calpha%5CDelta%20T)
Now by putting the values
![\Delta L=750\times \25.5\times 10^{-6}\times 200](https://tex.z-dn.net/?f=%5CDelta%20L%3D750%5Ctimes%20%5C25.5%5Ctimes%2010%5E%7B-6%7D%5Ctimes%20200)
ΔL=3.82 mm
So final length =750-3.82 mm
Final length= 746.175 mm
Answer:
The minimum mass flow rate will be "330 kg/s".
Explanation:
Given:
For steam,
![m_{s}=5.55 \ kg/s](https://tex.z-dn.net/?f=m_%7Bs%7D%3D5.55%20%5C%20kg%2Fs)
![\Delta h=2491 \ kg/kj](https://tex.z-dn.net/?f=%5CDelta%20h%3D2491%20%5C%20kg%2Fkj)
For water,
![\Delta T=10^{\circ}C](https://tex.z-dn.net/?f=%5CDelta%20T%3D10%5E%7B%5Ccirc%7DC)
![(Cp)_{w}=4.184 \ kJ/kg^{\circ}C](https://tex.z-dn.net/?f=%28Cp%29_%7Bw%7D%3D4.184%20%5C%20kJ%2Fkg%5E%7B%5Ccirc%7DC)
They add energy efficiency as condenser becomes adiabatic, with total mass flow rate of minimal vapor,
⇒ ![m_{s}\times (\Delta h)=M_{w}\times(Cp)_{w}\times \Delta T](https://tex.z-dn.net/?f=m_%7Bs%7D%5Ctimes%20%28%5CDelta%20h%29%3DM_%7Bw%7D%5Ctimes%28Cp%29_%7Bw%7D%5Ctimes%20%5CDelta%20T)
On putting the estimated values, we get
⇒ ![5.55\times 2491=M_{w}\times 4.184\times 10\\](https://tex.z-dn.net/?f=5.55%5Ctimes%202491%3DM_%7Bw%7D%5Ctimes%204.184%5Ctimes%2010%5C%5C)
⇒ ![13825.05=M_{w}\times 41.84](https://tex.z-dn.net/?f=13825.05%3DM_%7Bw%7D%5Ctimes%2041.84)
⇒ ![M_{w}=330 \ kg/s](https://tex.z-dn.net/?f=M_%7Bw%7D%3D330%20%5C%20kg%2Fs)
YAll don’t tell my cousin I’m hacking her school resources because I got a 0 in a test and she got a 100
Answer:
to make the bace of a building more sturdy
Explanation:
example: the bace of the empire state building is stone very sturdy