a) The speed of sound in methane gas(k=1.31; R=518j/kg K) at -5 degreeC is?
b) A jet plane is flying at 990 m/s in an (k = 1.4. Rair=287 J/kg K) at -15 degreeC. Find the temperature on the nose cone.
c) Estimate the discharge of water (T=10gegree C) that flows 3 m deep in a long trapezoidal concrete channel(n=0.017) that has a bottom width of 4 wide, a side slope of 1:3, and a bed slope of 0.001.