Question: (a) How fast is an object moving on land if its speed at 20oC is Mach 0.33? (b) A high-flying jet cruising at 3000 km/h

(a) How fast is an object moving on land if its speed at 20oC is Mach 0.33?
(b) A high-flying jet cruising at 3000 km/h displays a Mach number of 3.2 on a screen. What is the speed of sound at that altitude?

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