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Chapter 1: Introduction


Problem 1.3:

The pressure and temperature at a certain point in an air flow are kPa and oC, respectively. Find the air density at this point in kg/m3 and lbm/ft3.

Solution:

Given

The density can be calculated using ideal gas law as,

The density in \( \text{lbm/ft}^{3} \) can be calculated using the following conversions \( 1\,\text{kg}=2.2046\,\text{lbm} \), \( 1\,\text{m}=3.2808\,\text{ft} \). Therefore in \( \text{lbm/ft}^{3} \),



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