Given:
Density of liquid propane, $\rho = 514.7 \text{ kg/m}^3$
Diameter of the main pipe, $D_1 = 10 \text{ cm} = 0.10 \text{ m}$
Diameter of the throat, $D_2 = 5 \text{ cm} = 0.05 \text{ m}$
Differential pressure, $\Delta P = 7 \text{ kPa} = 7000 \text{
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