Question: 3 . [ 9 . 1 0 ] A certain aircraft flies at 6 0 9 mi / h at standard sea level. a .

3.[9.10] A certain aircraft flies at 609 mi/h at standard sea level.
a. What is its Mach number?
b. If it flies at the same Mach number at 34,000 ft altitude, how much slower (or
faster) is it flying, in mi/h?

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