Answer:
B. G = 333 mS, B = j250 mS
Explanation:
 impedance of a circuit element is Z = (3 + j4) Ω
The general equation for impedance
 Z = (R + jX) Ω
where 
R = resistance in ohm
X = reactance
R = 3Ω  X = 4Ω
Conductance = 1/R while Susceptance = 1/X
Conductance = 1/3 = 0.333S
= 333 mS
Susceptance = 1/4 = 0.25S
= 250mS
The right option is B. G = 333 mS, B = j250 mS
 
        
             
        
        
        
Answer:
P > 142.5 N  (→)
the motion sliding
Explanation:
Given
W = 959 N
μs = 0.3
If we apply
∑ Fy = 0 (+↑)
Ay + By = W
If  Ay = By 
2*By = W
By = W / 2
By = 950 N / 2
By = 475 N (↑)
Then  we can get F (the force of friction) as follows
F = μs*N = μs*By
F = 0.3*475 N
F = 142.5 N (←)
we can apply
P - F  > 0
P  > 142.5 N (→)
the motion sliding
 
        
             
        
        
        
Answer:
The heat transfer q = 18.32W
Explanation:
In this question, we are asked to calculate the heat entering the tube and also evaluate properties at T =400K
Please check attachment for complete solution and step by step explanation