Air enters a converging-diverging nozzle of a supersonic wind tunnel at 400 K and 1 MPa with a low velocity. If a normal shock wave occurs at the exit plane of the nozzle at Mach equal to 2, determine
(a) The pressure (p), the temperature (T),
(b) The velocity (V) and
(c) The Mach number,
(d) The total pressure after the shock wave.