Answer:
You could use this process to make a new item or solve a problem that you could be having around the house
I hope this helps!
Explanation:
Answer:
(a) Final temperature is 151.2 K
(b) Change in the specific internal energy is -30.798 kJ/kg
Explanation:
(a) P1 = P2 = 200 kPa
V1 = 12.322 m^3
V2 = 1/2 × V1 = 1/2 × 12.322 = 6.161 m^3
mass of refrigerant-134a = 100 kg
MW of refrigerant-134a (C2H2F4) = (12×2) + (2×1) + (19×4) = 24 + 2 +76 = 102 g/mol
number of moles of refrigerant-134a (n) = mass/MW = 100/102 = 0.98 kgmol
R = 8.314 kJ/kgmol.K
Final temperature (T2) = P2V2/nR = 200×6.16/0.98×8.314 = 151.2 K
(b) Change in specific internal energy = change in internal energy (∆U)/mass (m)
∆U = Cv(T2 - T1)
Cv = 20.785 kJ/kgmol.K
T1 = P1V1/nR = 200×12.322/0.98×8.314 = 302.4 K
∆U = 20.785(151.2 - 302.4) = 20.785 × -151.2 = -3142.7 kJ/kgmol × 0.98 kgmol = -3079.8 kJ
Change in specific internal energy = -3079.8 kJ/100 kg = -30.798 kJ/kg
Answer:
c. V2 equals V1
Explanation:
We can answer this question by using the continuity equation, which states that:
(1)
where
A1 is the cross-sectional area in the first section of the pipe
A2 is the cross-sectional area in the second section of the pipe
v1 is the velocity of the fluid in the first section of the pipe
v2 is the velocity of the fluid in the second section of the pipe
In this problem, we are told that the pipe has a uniform cross sectional area, so:
A1 = A2
As a consequence, according to eq.(1), this means that
v1 = v2
so, the velocity of the fluid in the pipe does not change.
Answer:
when you're going to need a designer a builder an electrical builder and a mechanic and you're going to need to be careful with what you use for all those things but the bike need to build you'll need a structure
Answer:1.)envirmental protection agency(EPA)
2.)lens shade number
3.)source extraction ventalation
4.)personal safety/protective equipment
Explanation:
