Question

In the upper atmosphere at altitudes where commercial airlines travel, we find extremely cold temperatures. What is the speed of sound (in metric units) for a temperature of -49.0 oC?

A. 984.9 m/s

B. 344.7 m/s

C. 300.8 m/s

D. 140.7 m/s

Answer 1

Basically -49 c is 224K
at 0c or 273k velocity of sound is 332 m/s (should have been given in question)
Now, velocity of sound is directly proportional to square root of temperature
Thus
v^2 / (332) ^2 = (224/273)
This gives us 300.732 m/s mathematically

So that gives us c as answer