Air enters a nozzle at 100 m/s, 20°C and 100 kPa. The maximum exiting velocity if it exits at 80 kPa is nearest:
A) 200 m/s
B) 215 m/s
C) 250 m/s
D) 300 m/s
B) 215 m/s
For maximum velocity assume s = const so 
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