일반물리학 1 — Fluids: Problem 46

46 Figure 14-40 shows a stream of water flowing through a hole at depth $h = 12 \text{ cm}$ in a tank holding water to height $H = 40 \text{ cm}$. (a) At what distance $x$ does the stream strike the floor? (b) At what depth should a second hole be made to give the same value of $x$? (c) At what depth should a hole be made to maximize $x$?