Answer:
10.22 m^3/s
Explanation:
To estimate the pressure drop in a pipe we use the Darcy-Weisbach equation
(equation 1)
With:
= Darcy-Weisbach friction coefficient
L = length of duct or pipe
v = velocity of fluid
D= hydraulic diameter
Also flow rate is:
Where v is:
Area as a function of the diameter is:
So
(equation 2)
For a laminar regime the the Darcy-Weisbach friction coefficient is function of the Reynolds number (Re) as:
With: v =velocity, D= diameter if the pipe and u= viscosity.
With this information alpha would be:
(equation 3)
Replacing equation 3 in equation 1 we have:
And finally replacing the value for v in this equation we have:
Clearing for Q we get an expression to estimate the expected flow rate in the pipe.
We know
Delta P = 1.84 psi or
L= 75 ft or 900 in
D for a 2 nominal schedule 40 PVC is 2.047 in. In tables you find External diameter and internal diameter. For calculations you use internal diameter (ID)
U for water at 20°C is or
So the flow expected for this pipe is or
Answer:
See the image for solution
Answer:
A) 209.12 GPa
B) 105.41 GPa
Explanation:
We are given;
Modulus of elasticity of the metal; E_m = 67 GPa
Modulus of elasticity of the oxide; E_f = 390 GPa
Composition of oxide particles; V_f = 44% = 0.44
A) Formula for upper bound modulus of elasticity is given as;
E = E_m(1 - V_f) + (E_f × V_f)
Plugging in the relevant values gives;
E = (67(1 - 0.44)) + (390 × 0.44)
E = 209.12 GPa
B) Formula for upper bound modulus of elasticity is given as;
E = 1/[(V_f/E_f) + (1 - V_f)/E_m]
Plugging in the relevant values;
E = 1/((0.44/390) + ((1 - 0.44)/67))
E = 105.41 GPa
Answer:
You need 5 bits to encode al the 24 greek distinct lowercase letters.
Explanation:
o encode 24 greek distinct lowercase letters, you should be able to write in binary language 24 different combinations.
With 1 bit you have only 2 possible combinations. Not enough.
With 2 bit you have only 4 possible combinations. Not enough.
With 3 and 4 bit you have only 8 and 16 possible combinations. Not enough.
With 5 bit you have 32 possible combinations. This is enough to encode all the 24 Greek letters.