Answer:
m = 0.04955 kg/h
Explanation:
Given data:
Assume Thickness of sheet = 4.3 mm
and area of 0.25 m^2
Temperature = 500 degree C
Mass of hydrogen/ hr can be calculated as
Where,
D - Diffusion constant
A - Area of sheet = 0.25 m^2
L - thickness = 4.3 mm = 4.3 \times 10^{-3} m
= Higher preesure side concentration of hydrogen = 3.3 kg/m^3
= low pressure side concentration of hydrogen = 0.64 kg/m^3
t =1 hr
therefore m value is
m = 0.04955 kg/h
Answer:
The lumped body analysis is most applicable for slender bodies because Biot number is smaller for the slender bodies as compare to the well rounded bodies.
As we know that Biot number Bi ,given as
h= heat transfer coefficient
k= thermal conductivity
Lc=characteristic length
V=volume
A=area
When Bi is less than 0.1 then lumped body analysis is applicable.
Answer:
We often add ing to a verb to name the thing created by the action of the verb. It's added to some verbs to make them nouns. You paint and create a painting. You carve and create a carving. You draw and create a drawing, and you build and create a building.
Explanation:
I hope this helped :)
Answer:
C Electrical Connections
Explanation:
In reading says . However, electrical
connections aren’t shown in construction drawings.
Defining the radius of area throat to inlet we would have that the proportional relationship would be
This equation or relationship is obtained from continuity where
Now applying the Bernoulli equation between inlet and throat section we have,
Here,
Then for a Venturi duct, the velocity of the airplane will be
Our values are,
Replacing,
Therefore the velocity of the airplane is 154.7ft/s