Answer for Homework
                                         2012-10-10
Chapter 2
HK-1: P110, Question 2
    Please compute the ratio of the density and pressure at the height of 10km to at
the sea level.
Answer (Use the equations as follows)：
  At the sea level,
    Height H= 0m
    Temperature Ta= 15℃ = 288.15°K
    Pressure   pa=101325Pa=101325N/m2
    Density   ρa=1.225Kg/m3
0 ≤ H ≤ 11000m

    T(°K) = 288.15  0.0065H    0 ≤ H ≤11000m

    Then TH=288.15-0.0065*10000=223.15°K
          p H ...