Answer:
The final temperature is 26.96 F
Explanation:
Initial pressure = 30 lbf/in^2 = 30×1.01325/14.696 = 2.1 bar
Initial temperature = 20 F = (20 - 32)/1.8 + 273 = 266.33 K
From steam table, entropy at 2.1 bar = 7.111 kJ/kg.K
Initial enthalpy = 7.111×266.33 = 1893.9 kJ/kg
Final pressure = 60 lbf/in^2 = 60×1.01325/14.696 = 4.1 bar
From steam table, entropy at 4.1 bar = 6.889 kJ/kg.K
Work = 0.5 Btu = 0.5×1.05506 = 0.5908 kJ
Change in enthalpy (∆H) = work/mass
mass of refrigerant = 0.04 lb = 0.04×0.45359 = 0.0181 kg
∆H = 0.5908/0.0181 = 32.64 kJ/kg
H2 = H1 - ∆H = 1893.9 - 32.64 = 1861.26 kJ/kg
Final temperature = final enthalpy ÷ final entropy = 1861.26 kJ/kg ÷ 6.889 kJ/kg.K = 270.2 K = 1.8(270.2 - 273) + 32 = -5.04 + 32 = 26.96 F
Answer:
Explanation:
From the question we are told that:
Internally pressurized
Tangential Stress
Axial stress
Generally the equation for maximum normal and shear stresses are experienced by the outer surface is mathematically given by
Therefore
Answer:
Realigning the mirror
Explanation:
mirrors should be aligned to minimize blind spots, not look at the tires.
Throughout the Word of God, water is a symbol, a "type," of the spirit of God, and is ... to represent holy spirit, that is, the divine nature and power of God. ... The average person can go about 60 days without food before he ... record illustrating the analogous relationship between water and the holy spirit.
Answer:
a. 0.28
Explanation:
Given that
porosity =30%
hydraulic gradient = 0.0014
hydraulic conductivity = 6.9 x 10⁻4 m/s
We know that average linear velocity given as
The velocity in m/d ( 1 m/s =86400 m/d)
v= 0.27 m/d
So the nearest answer is 'a'.
a. 0.28