Water flow Definition and 156 Threads

Homework Statement A pipe has area 4 cm2 and is connected to sprayer that has 4 holes each of 0.5 cm2. If the speed of water in pipe 2.5 m/s, the volume of water that comes out from each of the holes in 1 minute is ... liters a. 0.1 b. 0.6 c. 1 d. 6 e. 10Homework Equations A1v1=A2v2 Q = V/t =...

hi everyone! need some help about propellers..say i have a fixed mounted propeller and a flow of water with known velocity runs through it.. what would be the rpm of the propeller??.. i know there a re lots of things and parameters to consider... i need some good references, calculations ,and...

Figure 14-32 shows a modified U-tube: the right arm is shorter than the left arm. The open end of the right arm is height d = 10.0 cm above the laboratory bench. The radius throughout the tube is 1.30 cm. Water is gradually poured into the open end of the left arm until the water begins to flow...

Hello every one. This is my first post here so be gentle if i placed my topic in the wrong section. My problem is as following. I am trying to calculate the speed of the water which exits true a metal plate full of cirkulare holes. The metal plate is square and and has 14 holes each...

Homework Statement A tank is filled with water to a depth of 1m. A hole of cross section 1 cm^2 at the bottom allows the water to drain out. At what distance below the hole the cross sectional area of the stream is 0.9 times the area of the hole. Homework Equations The Attempt at a...

Hi all, I'm doing a experiment at home I'm trying to know how the flow rate on the water height that tossed from a nozzle with 3mm of diameter. By an other word if there is a relationship between flow and the height please some one explain it to me. Also I wana to know if the head pressure...

I am trying to figure the flow of water through a quater inch hole straight down. I know the area of my hole is .49 square inches, however, I am not sure how to go about getting the rate at which water will flow through that hole. Any help would be great.

Hi guys. I'll start out by admitting that I know very little about fluid dynamics, physics, etc. I've been searching the forums and a bit surprised that this particular topic hasn't come up (unless I just missed it). Has anyone here seen this? Would anyone mind pointing me in the right direction...

Homework Statement Water flows from a conical tank with circular orifice at the rate \frac{dx}{dt} = -0.6*\pi*r^2\sqrt{2g}\frac{\sqrt{x}}{A(x)} r is the radius of the orifice, x is the height of the liquid from the vertex of cone, A(x) is area of the cross section of the tank x units above...

Hi all, firstly I'm sorry because don't know which thread category should I ask from, but here goes: I'm doing my final year project about cooling solar panel with water film.basically it's flowing water over the panels. how can I calculate the water flow? does this have got to do with the q=...

Hello guys, I want to know whether the water flow rate from a tank depends on the geometrical shape of the tank (for instance sperical, rectangular, cylindrical) etc or it just depends on the water level in the tank. Thanx.

Hi I am a post-doc student in a field having very little to do with physics and math. currently I am designing an experiement and have (i hope) a relatively simple question. here is the scenario: A ziplock bag (or similarly non-elastic reservoir) contains water, but is not maximally...

Hi All, A friend and I were recently considering the idea of measuring water flow in a fire hose, buy measuring the flux generated by the water moving through the hose. Neither of us are scientific by any means, but I've been trying to research the idea and have not gotten very far. I...

Please help I'm going round in circles! Water on tank 12m high, feeding pipe 200m long and 125mm diameter. Open end. Given friction factor of 0.008 for the pipe and total of 3.2K for various fittings. Asked to find water flow rate in Kg/s in the pipe. Been looking at this for ages...

Homework Statement A horizontal pipe 10.9 cm in diameter has a smooth reduction to a pipe 4.50 cm in diameter. If the pressure of the water (density = 1000 kg/m3) in the larger pipe is 7.50×104 Pa and the pressure in the smaller pipe is 5.70×104 Pa, at what rate (as mass per unit time) does...

I have an acrylic tank that has an overflow area on each end. The tank has a top on it that is seamed in place. There is a 1/4" gap between the top of the overflow wall and the ceiling of the tank AND there are 42 - 1/4" x 1" cutouts along the top of each overflow wall. So, the question is...

So I decided that I want to machine my own water cooling system from scratch. I know it's going to take a lot of time for virtually no money saved, but I want some experience machining and it'd be really cool to make something that I'd actually use. So anyway, I can't figure out why all CPU...

Homework Statement Hello everyone, I'm working on a summer project with filters (they're rather simple). Anyways, my professor suggested that I calculate flux through the final surface of the filter, which I guess is speed of water? Long story short, I'm having a real problem with this... I...

1. A hypodermic syringe contains a medicine with a density of water. The barrel of the syringe has a cross-sectional area of 2.5x10e-5 m^2. A force of 2N is exerted on the pluger (left, larger side). Determine the velocity of the medicine as it emerges from the needle _________...

Brief description: I have a three tank system (A,B,C). Tank A is fitted with stand pipes with the over flow flowing down and then up through the bottom of a 1" bulkhead fitting and into Tank B. Tank B is approx. 12' x 2' x 12". At the end of Tank B is another 1" bulkhead fitting with the exit...

Dear all, I have worked with a challenge for two full days now without managing to solve it. I would be MOST grateful if anyone could help me sort out my confusion concerning the problem. I have a suction hose (100m, Ø 5cm) that is connected to a larger mouthpiece in the end (Ø 30cm). The...

I have been investigating the effect the flow rate of water has on the electrical resistance of the water. My hypothesis is that the faster the water flow rate the lower the electrical resistance. I have tested this using a fairly basic rig to regulate different flow rates and a multimeter...

Assume you have a can (representing a boat) with a hole in the bottom floating in a tank filled with water. The "boat" will start to sink. Now to my question.. My teacher told me that the speed of which water is runnig through the hole of the can is constant. But i can't seem to understand...

Mercury is poured into a U-tube. The left arm of the tube has cross-sectional area A1 of 10.0 cm2, and the right arm has a cross-sectional area A2 of 5.00 cm2. One hundred grams of water are then poured into the right arm.(a) Determine the length of the water column in the right arm of the...

I´m wanting to somehow demonstrate that if we measure the water flow on the header according to squetch for “Case 1” (see attached PDF) using a flowmeter previously installed, we are not going to get the same number for the GPM as if we proceed according to squetch for “Case 2”, where in order...

A pipe broke on the roof of a public building here in Chicago. Although I am an electrical engineer and very rusty on hydraulics and water flow, I have been asked to estimate the amount of water dumped on the roof of this building, as follows: Diameter of the burst pipe: 3/4 in. Water...

This due today! Water flows from a tank of constant cross-sectional area 56 ft2 through an orifice of constant cross-sectional area 1.5 ft2 located at the bottom of the tank. Initially the height of the water in the tank was 20 and its height t sec later is given by the following equation...

Homework Statement Water flows into a nozzle at 3.00 m/s at a pressure of 1.31*105Pa. What should the ratio of input to output diameter be if the flow is to remain steady? What is the flow speed at the exit? Homework Equations P_{{\rm{input}}} + \frac{{\rho v_{{\rm{input}}}^2 }}{2}...

Hi guys. Can u pls hlp me out. Let's say I have a 400 liter cylindrical tank with a tap at the botom. how do I calculate the rate at which the water flows from the tap and how far the water mite go? thanx in advance

the rate at which water is sprayed is given by the function f(t) during the time interval 0<t<4, what is the average rate of water flow?? I'm confused whether to use the formula f(4)-f(0) / (4-0) OR \frac{1}{4}\intf(t) evaluated from 0 to 4. help!

[SOLVED] Water flow in pipes Homework Statement Water is circulating through a closed system of pipes in a two floor apartment. On the first floor, the water has a gauge pressure of 3.4 x 10^5 Pa and a speed of 2.1 m/s. However, on the second floor, which is 4.0m higher, the speed of the water...

Homework Statement http://sudokupuzzles.net/IMG_0033g.gif Homework Equations Flow into a node=flow out of a node. Turned relative flows through each node (A,B,C,D,E,F) into system of equations; and entered system of equations into augmented matrix as shown. Reduced matrix to REF...

Thanks everyone for the warm welcome! Having said that, please forgive me if I'm being ignorant or unintentionally lazy. I was also unsure where to put this question. Again, my apologies if it's in the wrong area. Ok! On to my questions. And by all means point me to some reading...

What are the differences between the flow of water and current flow ? Besides the fact that the direction of current flow is opposite to the flow of e- where water molecules move in the same manner as flow of water... many Thanks.

Homework Statement At a faucet, the diameter of the stream is 0.960cm. The stream fills a 125cm^3 container in 16.3s. Find the diameter of the stream 13.0cm below the opening of the faucet. http://img100.imageshack.us/img100/1258/15222430xr8.th.jpg Homework Equations Bernoulli's eqzn...

Homework Statement Water is poured into a container that has a leak. The mass m of the water is given as a function of time t by m = 6.00t 0.8 - 3.35t + 23.00, with t 0, m in grams, and t in seconds. (a) At what time is the water mass greatest? (b) What is that greatest mass? (c) In...

Is anybody can help me to find a design company for the dishwasher water flow system in U.S. or Canada. It must have the real design experence for GE, Whirlpool etc.

Question: Water flows out of a 13.0mm-diameter sink faucet at 2.30m/s. At what distance below the faucet has the water stream narrowed to 10 mm diameter? What I've done is that... I found A_1 (faucet) to be 0.0001327m^2 and A_2 (bottom) to be 0.000314159m^2 So I did the whole A_1*v_1...

I have a length of pipe 10 mm inside diameter, and a pressure of 5 bar. At the end I require about 0.2 l/s. I know of the equation area=flow/velocity, A=q/c, but this doesn't take the pressure into consideration. How can I do this?

Homework Statement If you have a column of water that stands 1 foot in the air vertically, and at the bottom of the column you had a supply of water that was 1 inch high. And both of the water supplies had a pressure of 15psi. would the water flow from the column of water 1 foot in the air to...

Homework Statement If you have a supply line of water running from one tank to another tank. And you started to drain the water out of one of the tanks. Would the downward flow of water create a suction or low pressure in the supply tube? . Relevant equations[/b] The Attempt...

Water entering a house flows with a speed of 0.22 m/s through a pipe of 2.3 cm inside diameter. What is the speed of the water at a point where the pipe tapers to a diameter of 5 mm in m/s? Area 1 = 4.155 Area 2 = 19.635 Flow 1 = 4.155 (.22) = .914 m/s .914 = 19.635v v=.04655 mm/s...

Water flows out of a 17.0 mm-diameter sink faucet at 2.20 m/s. At what distance below the faucet has the water stream narrowed to 10 mm diameter? I am confused on how to approach this question as it is vertical and therefore using the bernoulli's eqn. for this makes no sense? or at least i...

I would like to know how to calculate the flow rate of water under compression by a hydraulic weight. How do you calculate using the value of the weight on top of the water and the height of the water in a straight column?

water from tap... A tap is left slightly open., and a gentle stream of water is flowing downwards from it. Why is it that the stream becomes thinner as it gets farther away from the tap? ??

You may know that water flow can be measured by an electromagnetic flowmeter. A strong magnetic field is applied perpendicular to the flow. An electric field is measured in the third direction. It seems to work just like a dynamo, which I understand, at least I believed that. But why...

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've got two tubes filled with liquid, their both of equal diameters, the first one is straight up and down about 20 feet long, the other is 100 feet long but is spiraled like on a spool, since the straight tube has a higher fall than the spiral, I would assume that the straight tube would have...

does anyone know how i could go about calculating how much power is needed to move 1,972,080 gallons of water at a constant rate of 25mph or 475,200,000 ft/s?...my friend and i are trying to figure out how to draw up a pool of water that would do this and i don't know how i could go about...

Neglecting evaporation, if you have a cubic mile of water (1 mile by 1 mile by 1 mile) how long would it take to drain if at the bottom there is a one square inch opening? I am verifying my answer with some really bright people. You