Air is flowing through a rocket nozzle. Inside the rocket the air has a density of 5.25 kg/m3 and a speed of 1.20 m/s. The interior diameter of the rocket is 15.0 cm. At the nozzle exit, the diameter is 2.50 cm and the density is 1.29 kg/m3
What is the speed of the air when it leaves the nozzle?
A) 123 m/s
B) 176 m/s
C) 88.0 m/s
D) 45.7 m/s
E) 29.3 m/s
Answer: B
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