Explanation:
a converging nozzle has an exit area of 0.001 m2. Air enters the nozzle with negligible velocity at a pressure of 1 MPa and a temperature of 360 K. For isentropic flow of an ideal gas with k = 1.4 and the gas constant R = Ru/MW = 287 J/kg-K, determine the mass flow rate in kg/s and the exit Mach number for back pressures 
 100% (3 ratings)
A_2 = 0.001 m^2 P_1 = 1 MPa, T_1 = 360 k P_2 = 500 kpa p^gamma - 1/gamma proportional T (1000/500)^1.4 - 1/1.4 = (360/T_2) 2^4/14 = 360/T_2 T_2
 
        
             
        
        
        
Water supply.
Food production.
Housing and shelter.
Sanitation and waste management.
Energy development.
Transportation.
        
                    
             
        
        
        
Answer:
So the fraction of proeutectoid cementite is 44.3%
Explanation:
Given that
cast iron with 0.35 % wtC and we have to find out fraction of proeutectoid cementite phase when cooled from 1500 C to room temperature.
We know that
Fraction of  proeutectoid cementite phase gievn as 

Now by putting the values


So the fraction of proeutectoid cementite is 44.3%
 
        
             
        
        
        
Answer:
The electric field to balance the weight is approximately equals to 3.49x10^5 Newton/Coulumb
Explanation:
In order to be stationary position, magnitude of the total force due to electric field should be equal to the gravitational force that is, 
where 

where <em>q</em> is the charge of the droplet and E is the electric field. On the other hand 

where <em>m</em>,<em>V ,d</em> and<em> r</em>  are the mass, volume, density and radius of the oil droplet respectively and <em>g </em>is the gravitational acceleration (g=9,80665 m/sn^2). By using the first equation and solving it for the electric field we can write, 

(Note: d=0.85 x 10^-3 kg/cm^3 and the unit of electric field is Newton per coulumb (N/C)) 
 
        
             
        
        
        
Answer:
Technician A says that when fifth wheel brackets are bolted to frame rails, the section modulus over that section of the frame is increased.
Explanation:
hope i helped