A child fills up a water gun with water from a pool. She holds the gun just completely submerged at an angle of ? = 25 from horizontal while pulling on the handle to suck water into the water gun tank. The tank has a length of L = 0.55 meters, and the nozzle of the gun has a cross-sectional area A₁ that is 245 times smaller than the area of the tank, A₂.

(6%) Problem 14: A child fills up a water gun with water from a pool. She holds the gun just completely submerged at an angle of 0 = 25 from horizontal while pulling on the handle to suck water into the water gun tank. The tank has a length of L = 0.55 meters, and the nozzle of the gun has a cross-sectional area Aj that is 245 times smaller than the area of the tank, A2. A 25% Part (a) Write an expression for the max absolute pressure at the tip of the water gun P100%, using Po as the atmospheric pressure and o as the density of water. P 100% = Grade Summary Deductions 0% Potential 100% cos(a) cos(Q) cos(0) ( 7 8 9 HOME Submissions sin(a) sin(Q) sin(0) 4 5 6 Attempts remaining: 1 (100% per attempt) O a g 2 3 detailed view h L Po + END P1 r VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 3 Feedback: 0% deduction per feedback. 4 25% Part (b) What is this pressure P100%, in pascals? 4 25% Part (c) The girl pulls the plunger so that the water evenly fills the length of the tank in a time t. Determine the speed of the water moving through the nozzle, in terms of this time, the length L, and the areas Aj and A2. 4 25% Part (d) If the girl pulls the plunger so that the pressure in the tank of the water gun is 0.15Po and the tanks fill in a time 42 s, what is the pressure in the nozzle during this process, in pascals