(10%) Problem 5: Some fish have a density slightly less than that of water and must exert a force, by swimming, to stay barely submerged. @theexpertta mom www --walton to any solutions sharing website is strictly forbidden. Doing so may 14 in termilllaws What magnitude of force, in newtons, must an 87.5-kg grouper exert to stay submerged in salt water (with density 1025 kg/m ) if its body density is 1015 kg/m3?(20%)) Problem 6: Anozzle with a radius of 0.32 cm is attached to a garden hose with a radius of 0.91 cm that is pointed straight up. The ow rate through hose and nozzle is 0.45 Li's. Randomized Variables r\" = 0.32 cm r}: = 0.91 cm Q = 0.45 Li's E 82 50% fart (a) Calculate the maximum height to which water could be squirted with the hose if it emerges from the nozzle l.l.'l In. 112 = 33.2 X Attempts Remain t; a 50% Part (b) Calculate the maximum height (in cm) to which water could be squirted with the hose if it emerges with the nozzle removed, assuming the same ow rate. (10%) Problem 7: Every few years, winds in Boulder, Colorado, attain sustained speeds of 45.0 m/s (about 100 mi/h) when the jet stream descends during early spring. * Approximately what is the force due to the Bernoulli effect on a roof having an area of 225 m-? Typical air density in Boulder is 1.14 kg/m, and the corresponding atmospheric pressure is 8.89 x 10# N/m-. (Bernoulli's principle assumes a laminar flow. Using the principle here produces only an approximate result, because there is significant turbulence.)(20%) Problem 8: A sump pump (used to drain water from the basement of houses built below the water table) is draining a flooded basement at the rate of 0.75 L/s, with an output pressure of 1.4 x 10- Pa. 50% Part (a) The water enters a hose with a 3.3 cm inside diameter and rises 2.1 m above the pump. What is its pressure at this point, in pascals? You may neglect frictional losses. P2 = 1.19 * 10(5) P2 = 119000 V Correct! A 50% Part (b) The hose then goes over the foundation wall, losing 0.55 m in height, and widens to 5.7 cm in diameter. What is the pressure now, in pascals? You may neglect frictional losses