Problem 9.17 Problem 9.18 - Enhanced - with Hints and Feedback Hippos spend much of their lives in water, but amazingly, they don't swim. They have, like manatees, very little body fat. The density of a hippo's body s approximately 1030 kg/my, so it sinks to the bottom of the freshwater lakes and rivers it frequents-and then it simply walks on the bottom. Astronauts visiting a new planet find a lake filled with an unknown liquid. They have with them a plastic cube, 8.0 cm on each side, with a density of 840 kg/m" . First they weigh the cube with a spring scale, measuring a weight of 23 N. Then they float the cube in the lake and find that two-thirds of the cube is submerged. https://session.masteringphysics.c nment Print View?assignmentID=9783692 2/8 Part A At what depth in the lake will the pressure be twice the atmospheric pressure of 85 kPa? 2/23/22, 7:50 AM Homework 4 Express your answer with the appropriate units. You did not open hints for this part. ANSWER: d = Water Flowing from a Tank Water flows steadily from an open tank as shown in . The elevation of point 1 is 10.0 meters, and the elevation of points 2 and 3 is 2.00 meters. The cross-sectional area at point 2 is 0.0480 square meters; at point 3, where the water is discharged, it is 0.0160 square Part A meters. The cross-sectional area of the tank is very large compared with the cross-sectional A 1600 kg hippo is completely submerged, standing on the bottom of a lake. What is the approximate value of the upward normal force on the area of the pipe. hippo? Express your answer with the appropriate units. ANSWER: 10.0 m Fupward = 1024.1 N 2.00 m Incorrect; Try Again https:/session.masteringphysics.com/myct/assignmentPrint View ?assignmentID=9783692 2/23/22, 7:50 AM Homework 4 Part A Assuming that Bernoulli's equation applies, compute the volume flow rate Q, or Express your answer in cubic meters per second. You did not open hints for this part. ANSWER: volume flow rate = m /s