일반물리학 1 — Fluids: Problem 10

10 A liquid of density \( 900 \text{ kg/m}^3 \) flows through a horizontal pipe that has a cross-sectional area of \( 1.80 \times 10^{-2} \text{ m}^2 \) in region A and a cross-sectional area of \( 9.50 \times 10^{-2} \text{ m}^2 \) in region B. The pressure difference between the two regions is \( 7.20 \times 10^3 \text{ Pa} \). What are (a) the volume flow rate and (b) the mass flow rate?