Bernoulli's Definition and 322 Threads

Homework Statement Examine the schematic of the tower. Water flows in at the top to balance the water flowing out through the holes, so the height of the water in the tower stays fixed. Take state 1 at the top of the water in the tower and state 2 in the water just as it flows out of the...

[Two circular holes, one larger than the other, are cut in the side of a large water tank whose top is open to the atmosphere. Hole 1 is the larger hole, and hole 2 is the smaller hole. The center of one of these holes is located 6.61 times as far beneath the surface of the water as the other...

Homework Statement A water tank of height h has a small hole at height y. The water is replenished to keep h from changing. The water squirting from the hole has range x. The range approaches zero as y goes to 0 because the water squirts right onto the table. The range also approaches zero as...

I'm writing an engineering white paper on a soap-dispensing shower head. The product will have a canister of soap on top of a basic generic shower head separated by a mesh so that due to the viscosity of the soap, the flow of the water rushing by will be the main determining factor on how much...

Water flows at 0.67 m/s through a 3.0 cm diameter hose that terminates in a 0.35 cm diameter nozzle. Assume laminar non-viscous steady-state flow. (a) At what speed does the water pass through the nozzle? 49.22 m/s (b) If the pump at one end of the hose and the nozzle at the other end are...

Homework Statement Q. A large water tank, open at the top, is situated at the top of a hill. A pipe leads downhill from the bottom of the tank. The pipe has a diameter 5.0 cm where it is attached to the tank at point A, but gradually narrows to a diameter of 3.0 cm at a point B which is...

A firehose must be able to shoot water to the top of a building 35 m tall when aimed straight up. Water enters the hose at a steady rate of 0.500 m3 / s and shoots out of a round nozzle. (a) What is the maximum diameter this nozzle can have? (b) If the diameter of the hose is 10 cm, what is...

Meaning of bernoulli's equation??Pleaseee When we evaluate the bernoulli's equation-p/(density*gravity)+v^2/(2*gravity)+z=constant. we get a value whose unit is metre.how am i supposed to actually interpret this result?

if i keep a funnel shaped long tube on the roof of a moving vehicle, will the air going in follow Bernoulli's equation?

hi all, am a confused-being after trying to solve this really simple question.. somewhere somehow my concepts are just not right ): Consider an airplane flying with a velocity of 60m/s at a standard altitude of 3km. At a point on the wing, the airflow velocity is 70m/s. Calculate the...

I have a simple pipe (with water) that reduces in diameter. I've been trying to calculate the pressure after the reduction using the first version of the Bernouli equation shown here; http://en.wikipedia.org/wiki/Bernoulli's_principle Now to calculate the velocity I've replaced the v with...

Homework Statement A large storage tank (diameter 10m) is filled 10m deep with water (density= 1000 kg/m^3, viscosity= 1.0x10^-3 Pa*s). The outlet at the bottom consists of 2 pipes, as shown. The large pipe has a diameter d2= 0.1m, and the smaller have a diameter d3= 0.05m and length of 20m. A...

Homework Statement A continuous stream of water is flowing out of a faucet and falling into a sink below. Explain why this stream of water is narrower at the bottom (near the sink) than at the top (near the faucet). Hint: Think about the change in velocity and the change in pressure as the...

Hi everyone, I read on a website that the Bernoulli's expression can be applied to airplane wings by using the equation: Difference in pressure above and below wing = 1/2 x air density x [(airflow velocity below wing)^2 - (airflow velocity above wing)^2] I tried using it but the...

Hi everyone, I read on a website that the Bernoulli's expression can be applied to airplane wings by using the equation: Difference in pressure above and below wing = 1/2 x air density x [(airflow velocity below wing)^2 - (airflow velocity above wing)^2] I tried using it but the...

I have in my notes that as speed of a fluid increases, density decreases. This doesn't make sense to me. When a fluid passes through a narrower area, doesn't that mean that its density is increasing because it is now packed more tightly together? If this is the case, shouldn't the rule be that...

Homework Statement An old two pipe system runs through a hill, with distances D_a=D_b=30m and the total Distance is D=110m. On each side of the hill, the pipe radius is .0200m. However, the radius of the pipe inside the hill is no longer known. To determine it, hydraulic engineers first...

According to Bernoulli's law pressure and velocity along a stream line are related to each other. What is the most correct way to describe it ? A. First the pressure change and then the flow velocity change. the change in the flow velocity is caused by the pressure change (F=Ma> PA=Ma). B...

Homework Statement A simple U-tube that is open on both ends is partially filled with a liquid of density (491 kg/m^3). Water is then poured into one arm of the tube, forming a column height of (8.2 cm). The density of the heavy liquid is (1000 kg/m^3). What's the difference , h, in the...

Homework Statement In the figure below, fresh water flows through a horizontal drainage pipe and then out into the atmosphere at a speed v1 = 15 m / s. The diameters of the left and right sections are 5.0 cm and 3.0 cm. (a) Find the mass of water that flows into the atmosphere in one...

Do anyone know about any website were the Bernoulli equation is developed from the Newton Second law and without the assumption of steady state and incompressible fluid? With differential calculus, please. My textbook just give out the equations for unsteady state and incompressible, but I...

[SOLVED] Bernoulli's Equation Prob? Homework Statement EXACT PROBLEM: Water emerges from a faucet of diameter 'd' in steady, near vertical flow with speed 'v'. Show that the diameter of the falling water column is given by D = d[v^2/(v^2+2gh)]^(1/4), were 'h' is the distance below the...

"Wing Commander Physics" and Bernoulli's Principle? Hey guys, I was wondering if you could lend me a hand on how to deal with a particular situation I have. I have an assignment regarding bad physics in movies, and the movie I chose is really an easy one to bash: "Wing Commander" (1999). If...

According to bernoullli, assuming ideal flow, if you increase the area of a tube... vessel in this case, pressure increases as well however, high blood pressure is caused by constriction of arteries... so is blood flow just not ideal then?

Homework Statement The water supply of a building is fed through a main entrance pipe 6.0 cm in diameter. A 2.0 cm diameter faucet tap positioned 2.0 m above the main pipe fills a 25 liter container in 30 s. (a) What is the speed at which the water leaves the faucet. (b) What is the gauge...

Jane goes to a juice bar with her friend Neil. She is thinking of ordering her favorite drink, 7/8 orange juice and 1/8 cranberry juice, but the drink is not on the menu, so she decides to order a glass of orange juice and a glass of cranberry juice and do the mixing herself. The drinks come in...

Homework Statement In an aortic aneurysm, a bulge forms where the walls of the aorta are weakened. If blood flowing through the aorta (radius 1.1 cm) enters an aneurysm with a radius of 3.1 cm, how much on average is the blood pressure higher inside the aneurysm than the pressure in the...

There's a simple explanation that wasn't covered in the last thread about this. Start off with an ideal incompressable fluid with no viscosity in a pipe. The flow rate in the pipe is fixed. The amount of mass per unit time moving past any cross section in the pipe is constant, otherwise mass...

Lets assume that vacuum empty cylinder has a spinning top. Rotational speed at circumference is V. Cylinder axis is oriented verticaly. Cylinder is surranded by air at athmospheric pressure and weights slightly more then displaced air. According to Bernoulli principle there should be...

I have this question that I have stumped on for quite some time, discuss how the continuity equation and bernoulli's equation might relate to one another? Please post if you can explain this to me? Thx

Homework Statement i need to make a sample problem for a physics project using Bernoulli's equation, the real life situation it must be applied to is flight Homework Equations P+.5pv^2+pgy = constant The Attempt at a Solution this physics is too involved for my understanding. I've...

If anyone can help me, I will be extremely grateful: i need to make a sample problem for a physics project using Bernoulli's equation: P+.5pv2+pgy = constant i don't know how to make a problem using this equation because the physics are a bit advanced for me and i don't know realistic...

Homework Statement The water supply of a building is fed through a main pipe 6.00 cm in diameter. A 2.00-cm-diameter faucet tap, located 2.00 m above the main pipe, is observed to fill a 25.0-L container in 30.0 s. (a) What is the speed at which the water leaves the faucet? (b) What is the...

Hello Physics Masters! I would like to calculate pressure drop values caused by friction as water flows through a a smooth pipe at different velocities and different internal pipe diameters. I ONLY want the pressure drop values caused by friction, not the pressure drop values caused by...

Liquid flows through a 4cm diameter at 1m/s. There is 2cm diameter restriction i n the line. Find fluid velocity in restriction. p_1+ \rho\cdot g \cdot y_1 + \frac{1}{2}\rho \cdot(v_1)^2 = p_2+ \rho \cdot g\cdot y_2 + \frac{1}{2}\cdot \rho\cdot(v_2)^2 I know I have to use Bernoulli's...

When I check units in the terms in Bernoulli's equation, they do not match: Given: p1 + 1/2 (row) v1^2 = p2 + 1/2 (row) v2^2 On the left hand side of the equation, the first term, pressure must have units of force/unit area; say lb/ft^2. The units in the second term are the product...

Nevermind, I think I figured out why I needed to set P2 = 0 in the first problem. Actually, what I needed to do was set P2 = 1 atm, and when I calculated force, I needed to use F = (P2 - P1) * A to get the right answer. So just ignore this...but here's the post anyway: For anyone who has...

Water flows throgh a horizontal tube of diameter 2.8cm that is joined to a second horizontal tube of diameter 1.6cm. the pressure difference between the tubes is 7.5kPa. which tube has the higher pressure flow? which tube has the higher speed flow? find the speed of flow in the first tube...

"An artery of radius 1 mm leaves the heart and travels upward 0.3 m to your shoulder, where it breaks into 3 smaller veins, each of radius 0.5 mm. Blood flows through the artery at a speed of 0.8 m/s as it leaves the heart. The density of blood is 1050 kg/m^3." I determined that the blood...

One large pipe is splitted into 2 smaller pipes. Can we use Bernoulli's equation and say that the total head at a point in the large pipe is equal to a point at one of the 2 smaller pipes? Why is energy not conserved?

What I want to do is maintain a gas at very high pressure and temperature for propulsion purposes. The problem is containing a gas at high pressure requires a thick walled tank, and the resulting mass would obviate the advantage of having the gas at high pressure. So what I'm considering is...

A water pipe having a 2.6 cm inside diameter carries water into the basement of a house at a speed of 0.90 m/s and a pressure of 240 kPa. If the pipe tapers to 1.6 cm and rises to the second floor 7.5 m above the input point, what are the (a) speed and (b) water pressure at the second floor...

Water flows through a horizontal pipe and then out into the atmosphere at a speed v1 = 19 m/s. The diameters of the left and right sections of the pipe are 4.3 cm and 2.1 cm, respectively. (a) What volume of water flows into the atmosphere during a 16 min period? In the left section of the pipe...

I got this question on my physics test "What will happen if you blow over a piece of paper?" I answered that with enough blowing, the wind created would make the paper fly off. Apparently according to my teacher, the correct answer was that from Bernouilli's theorem, the air velocity above...

Hello, I am a student taking Conceptual Physics in College. We have just completed going over Bernoulli's Principle of lift. Please bear with me on this as it will most likely seem elementary to most of you. Below are several claims that I've heard and that my logical reasoning tells me to be...

This isn’t really homework, but it might as well be with all the calculations involved. I am trying to figure out the difference in pressures inside a pipe carrying a fluid when the pipe goes from a ¼” diameter to 1/8” diameter when the constant flow rate is 9 Liter per minute. I got an...

The velocity of the water that comes out of the opening in the attached diagram can be found using Bernoulli equation, as v = sqrt (2gh) Once the water exits the hole, I am not sure how to answer questions like the following: Can I use conservation of energy and momentum. Also can I use...

I have this problem: Water flowing in a horizontal pipe is at a pressure of 1.5 105 Pa at a point where its cross-sectional area is 1.50 m2. When the pipe narrows to 0.400 m2, the pressure drops to 1.16 105 Pa. (a) Find the water's speed in the wider pipe (b) Find the water's speed in the...

A large root beer keg of height H and cross sectional area A1 is filled with root beer. The top is open to atmospheric pressure. At the bottom is a spigot opening of area A2, which is much smaller than A1. Find the total time needed to drain the keg if H=2m, A1=.8m^2 and A2=10^-4 * A1.

This isn't really a homework problem, but my physics teacher was going over a test review and he made up some numbers on the spot for a problem involving Bernoulli's equation and a building. The specifics were, A water pipeline with the water under a pressure of 5 atm is being pumped into a...