Problem 4: A weather balloon has an absolute-pressure sensor attached. On the ground the sensor reads PA = 1.01x10 Pa. At a height of h = 974 m, the sensor reads PB = 8.81x10 Pa. В A Part (a) Assuming air is an incompressible fluid, enter an expression for an estimate of the density of air, in terms of the defined quantities and the acceleration due to gravity, g. Expression : Select from the variables below to write your expression. Note that all variables may not be required. B. Y, 8, b, d, g, h, j, k, m, n, P, PA, Pg. S Part (b) Calculate the density of air, in kilograms per cubic meter, assuming it is an incompressible fluid. Numeric : A numeric value is expected and not an expression.

Problem 4: A weather balloon has an absolute-pressure sensor attached. On the ground the sensor reads PA = 1.01x10 Pa. At a height of h = 974 m, the sensor reads PB = 8.81x10 Pa. В A Part (a) Assuming air is an incompressible fluid, enter an expression for an estimate of the density of air, in terms of the defined quantities and the acceleration due to gravity, g. Expression : Select from the variables below to write your expression. Note that all variables may not be required. B. Y, 8, b, d, g, h, j, k, m, n, P, PA, Pg. S Part (b) Calculate the density of air, in kilograms per cubic meter, assuming it is an incompressible fluid. Numeric : A numeric value is expected and not an expression.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter12: Fluid Dynamics And Its Biological And Medical Applications

Section: Chapter Questions

Problem 47PE: An oil gusher shoots crude oil 25.0 m into the air through a pipe with a 0.100-m diameter....

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The gravitational force exerted on a solid object is 5.00 N. When the object is suspended from a spring scale and submerged in water, the scale reads 3.50 N (Fig. P15.24). Find the density of the object. Figure P15.24 Problems 24 and 25.
Figure P15.52 shows a Venturi meter, which may be used to measure the speed of a fluid. It consists of a Venturi tube through which the fluid moves and a manometer used to measure the pressure difference between regions 1 and 2. The fluid of density tube moves from left to right in the Venturi tube. Its speed in region 1 is v1, and its speed in region 2 is v2. The necks cross-sectional area is A2, and the cross-sectional area of the rest of the tube is A1. The manometer contains a fluid of density mano. a. Do you expect the fluid to be higher on the left side or the right side of the manometer? b. The speed v2 of the fluid in the neck comes from measuring the difference between the heights (yR yL) of the fluid on the two sides of manometer. Derive an expression for v2 in terms of (yR yL), A1, A2, tube, and mano. FIGURE P15.52
An oil gusher shoots crude oil 25.0 m into the air through a pipe with a 0.100-m diameter. Neglecting air resistance but not the resistance of the pipe, and assuming laminar flow, calculate the gauge pressure at the entrance of the 50.0-m-long vertical pipe. Take the density of the oil to be 900 kg/m3 and its viscosity to be 1.00 (N/m2) s (or 1.00 Pa s). Note that you must take into account the pressure due to the 50.0-m column of oil in the pipe.
The inside diameters of the larger portions of the horizontal pipe depicted in Figure P9.45 are 2.50 era. Water flows to the right at a rate of 1.80 104 m3/s. Determine the inside diameter of the constriction. Figure P9.45
The inside diameters of the larger portions of the horizontal pipe depicted in Figure P9.45 are 2.50 era. Water flows to the right at a rate of 1.80 104 m3/s. Determine the inside diameter of the constriction. Figure P9.45
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How tall must a water-filled manometer be to measure blood pressures as high as 300 mm Hg?