Fluid
Air at $T 1=300 \mathrm{~K}, p 1=303 \mathrm{kPa}$, and $V 1=0.5 \mathrm{~m} / \mathrm{s}$ enters the Venturi shown in Fig. P5.43. The air leaves at $T 2=220 \mathrm{~K}$ and $p 2=101 \mathrm{kPa} ; A 1=0.6 \mathrm{~m} 2$ and $A 2=1.0 \mathrm{~m} 2$. Calculate the horizontal force required to hold the Venturi stationary. Figure P5.43