Answer Happy

nole is 8.0 10 m' and is located 20 m beneath the surface of the lake. What volume of water per second leaks into the ship? *69. ssm A Venturi meter is a device that is used for measuring the speed **76. Two circular holes, one larger than the other, are cut in of a fluid within a pipe. The drawing shows a gas flowing at speed uz large water tank whose top is open to the atmosphere. The ce through a horizontal section of pipe whose cross-sectional area is Az of these holes is located twice as far beneath the surface of 0.0700 m². The gas has a density of p = 1.30 kg/m'. The Venturi meter the other. The volume flow rate of the water coming out of the has a cross-sectional area of A = 0.0500 m2 and has been substituted same. (a) Decide which hole is located nearest the surface for a section of the larger pipe. The pressure difference between the two (b) Calculate the ratio of the radius of the larger hole to the sections is P-P, = 120 Pa. Find (a) the speed v, of the gas in the larger, smaller hole original pipe and (b) the volume flow rate of the gas. Section 11.11 Viscous Flow 77. ssm Poiseuille's law remains valid as long as the laminar. For sufficiently high speed, however, the flo turbulent, even if the fluid is moving through a smooth pip restrictions. It is found experimentally that the flow is lamin as the Reynolds number Re is less than about 2000: Re Here . p. andare, respectively, the average speed. de Venturi meter viscosity of the fluid, and R is the radius of the pipe. Call highest average speed that blood (p-1060 kg/m', 7-40 could have and still remain in laminar dow when it flows th 70. O A hand-pumped water gun is held level at a height of 0.75 m aorta (R-80 X 10-m). above the emund and fired. The water stream from the gun hits the