Evaluate the exit velocity, Mechanical Engineering

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A perfect gas flows through a nozzle when it expends in a reversible adiabatic manner, the inlet conditions are 22 bar,, 500^oc, 38 m/s. At exit the pressure is 2 bar. Evaluate the exit velocity and exit area if the flow rate is 4 Kg/s. Take R = 190J/KgK and γ = 1.35

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