A Plane Is Traveling at Mach 0

question 16

Multiple Choice

A plane is traveling at Mach 0.980 through air at a temperature of 0°C.What is the plane's speed? (Speed of sound at 0°C is 331 m/s. )

• A) 314 m/s
• B) 324 m/s
• C) 348 m/s
• D) Mach number is undefined at 0°C.

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