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Re:Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-B... by theothermkn on Tuesday February 19, 2019 @05:15PM (#19203407)
> [The speed of sound] is affected by the density of the air (which is a combination of the air pressure and temperature)...

This is incorrect. The speed of sound in an ideal gas is a function of temperature only, and not its density. Namely, it is sqrt(gamma x R x T), where R and gamma are unchanging properties of the gas.

Re:Boeing 787 Reaches 801 MPH as a Jet Stream Packs Record-B... by cyberferret on Wednesday February 20, 2019 @01:24AM (#19206027)
Thank you. I stand corrected.