Air Is Flowing Through a Rocket Nozzle

question 70

Multiple Choice

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) 176 m/s
• B) 29.3 m/s
• C) 88.0 m/s
• D) 35.2 m/s
• E) 343 m/s

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Definitions:

Sample Size

The number of individual observations or data points collected in a sample from a larger population.

ANOVA

A statistical method, short for Analysis of Variance, that assesses potential differences in means among multiple groups.

Assumptions

Assumptions are accepted truths or beliefs that are taken for granted without proof, used as a basis for reasoning, discussions, or theoretical modeling.

Nonparametric Test

A type of statistical test that does not assume the data follows a normal distribution or any other specified parameters.