Air enters a convergent-divergent nozzle at (20 mathrm{bar}) abs. and (40^{circ} mathrm{C}). At the end of the

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Air enters a convergent-divergent nozzle at \(20 \mathrm{bar}\) abs. and \(40^{\circ} \mathrm{C}\). At the end of the nozzle the pressure is 2.0 bar abs. Assume a frictionless adiabatic process. The throat area is \(20 \mathrm{~cm}^{2}\).

(a) What is the area at the nozzle exit?

(b) What is the mass flow rate in \(\mathrm{kg} / \mathrm{s}\) ?

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