일반물리학 1 — Fluids: Problem 57

57 In Fig. 14-42, water flows through a horizontal pipe and then out into the atmosphere at a speed \( v_1 = 23.0 \text{ m/s} \). The diameters of the left and right sections of the pipe are \( 5.00 \text{ cm} \) and \( 3.00 \text{ cm} \). (a) What volume of water flows into the atmosphere during a 20.0 min period? In the left section of the pipe, what are (b) the speed \( v_2 \) and (c) the gauge pressure?