Which answer is correct and why.

The water tank (flush tank) on a typical toilet is 61- 58 19 water 37 shown here. When the handle, #61, is pushed down, level the lever that connects to #32 and rod 34 pulls up the flapper valve V and lets water flow into the bowl through pipe 14, which has a cross sectional area of b 32 0.12 m2. Normally, V is closed and horizontal. Once the handle is released, the valve V slowly falls back and shuts the flow off. While the water level is 36-1 34 falling, the float ball #37 follows the water level 17 down, and this opens valve #38 that allows water in to refill the tank through the pipe #36. The float ball rises with the water until it is high enough to shut 14 off the water switch #38. The float ball is a hollow water pipe in water out sphere made of hard rubber. C A 1. In an attempt to fill the tank faster, since he is not allowed to change the size of the water pipe in, the owner replaces tube #36 with a tube twice as wide. (A) the pressure inside tube 36 is now lower (B) the pressure inside tube 36 in now higher (C) the pressure inside tube 36 is the same as it was. +3 D C 2. In an attempt to fill the tank faster, since he is not allowed to change the size of the water pipe in, the owner replaces tube #36 with a tube twice as wide. (A) the tank will fill 4 times as fast (B) the tank will fill 2 times as fast (C) the tank will fill at the same rate (D) the tank will actually fill 2 x slower (E) the tank will actually fill 4x slower. C A 3. If you replaced the float ball by a ball that weighed the same but had a smaller diameter, (A) the ball will sit higher out of the water (B) the ball will sit deeper in the water (C) the ball will sit at exactly the same position above the water. B 4. If you increase the size of the flapper value, what can you say about the force the water exerts on the flapper value when it is closed? (A) It increases (B) It decreases (C) It stays the same. (D) Not enough information is given to know. C A 5 If the valve did not close tightly, a small gap may allow a bit of water to leak. Which equation would be most useful to analyze this problem? (A) P + pgh + 5 pv2 = constant (B =4 _AV_ TRAP (C) B=pVg (D) p=m/V At 8nL