일반물리학 1 — Fluids: Problem 60

60 Consider the venturi tube of Problem 59 and Fig. 14-43 without the manometer. Let A equal 5a. Suppose the pressure \( p_1 \) at A is 3.0 atm. Compute the values of (a) the speed V at A and (b) the speed v at a that make the pressure \( p_2 \) at a equal to zero. (c) Compute the corresponding volume flow rate if the diameter at A is 5.0 cm. The phenomenon that occurs at a when \( p_2 \) falls to nearly zero is known as cavitation. The water vaporizes into small bubbles.