Tube Definition and 886 Threads

How do you calculate the minimum bend radious for a tube? Its a SS tube and we want to bend as small a radius as possible...

An object is put in a test tube . The test tube is put in a centrifugal machine where it spins around. Would it be correct to say that the net force on the object is zero since it is not moving. I know the test tube has a net inward force that makes it change direction. But the object wants to...

Hello, Supose you have an U tube, in which the inner walls are made absolutelly reflective. Now, put a termical state (temperature T) for the radiation field inside the tube and close it with reflective discs which can slide without friction. Supose further that de diameter of the tube in its...

I`m a little worried by the line "or look a bit foriegn"

Hello, I was looking for the name of the principle which governs the following- given a constant air flow- air moves faster through a tube with a smaller diameter than a tube with a larger diameter. Wouldn't you like to know what this has to do with singing? Thank you Debruyn

I was going though one of those aquariums where you can walk through a plastic tube and can see the sea creatures up close without getting wet. How could I find an approximate thickness of the tube just with my eye and something I can bring, like a flashlight, ruler, protractor, or whatever...

How can you find the diameter of a tube without measuring it? Is there a equation or something or any method other than measuring it

i have a circular tube of diameter 20mm,thickness 1mm and length 500 metres i bend the tube into a radius of 50mm. obviously the tube has entered the plastic stage. But what would have happened to the material properties. hOW CAN I CALCULATE THE CHANGE IN MATERIAL PROPERTIES. THE...

I'm making a distillation apparatus and I've hit a block. The steel wool I packed into the plastic tubing (acting as a fractionating column) is rusting incredibly fast. I obviously don't want to be drinking rust, so can I just take the wool out and use an extra long tube instead? I'm thinking...

Well, I was going through some example problems to study for a test and came upon one I can't figure out. Here is the question: A long straight cylindrical tube has an inner radio Ri and an outer radius Ro. It carries a current i, uniformly distributed over its cross section. A wire which...

Should it be removed. Please tell why you voted. I think no because she is not on life support. She is just like a baby who needs feeding.

I was given this problem for homework. Assume you have a television tube that is about 0.3 m from cathode to screen, and electrons are accelerated uniformly through 20 kV – the electric field is constant. How long does it take for the electrons to travel from the cathode to the screen...

Ive got a question where I have to find the acceleration of a single electron due to the magnetic field. Now here is what I did. I tired to find Velocity using KE = .5mv^2. Solving for v. Then knowing that F=qvB and F=ma I made the equation qvb/m=a. But I can't get this to work. Is there some...

Why is it that when you place a test tube over a burning candle in a peatree dish with water, that the candle goes out and then the water from the dish rises into the test tube. Mainly what are the reasons that the water rises. I am kind of going with the "temperature and pressure are related"...

hey, I am really confused with this problem, i have tried to solve it for a while now but i can't seem to get it, i really don't even know where to start with it. In a TV picture tube the accelerating voltage is V, and the electron beam passes through an aperture with a diameter of Delta_y...

A hollow steel tube (diameter = 3.84 cm) is sealed at one end and loaded with lead shot to give a total mass of 0.161 kg. When the tube is floated in pure water, what is the depth, z, of its bottom end? :smile:

Hi, I need to work out the bending moment of a steel tube, 25mm diameter (3mm thick) 410mm long. im assuming i have to use youngs modulus in some way? what's the correct formula for working out when it will bend? thanks chris

Hi, I need to work out the bending moment of a steel tube, 25mm diameter (3mm thick) 410mm long. im assuming i have to use youngs modulus in some way? what's the correct formula for working out when it will bend? thanks chris

electric field I can't find any straight forward solutions to this problem.. it's not addressed in the textbook (even though there is a chapter problem about it) and the internet doesn't have what I need either. I'm hoping someone could give me some insight on this. An electron (q = -1.602 x...

I was wondering if anybody knew the type of steel that is used for the tube structure of steel rollercoasters and also its youngs modulus. I also need to know the youngs modulus for the polyurethane wheels they run on. I need this informattion for a new science project and have looked everywhere...

Its funny how one can forget how to do very simple things. :rolleyes: Here is a problem I've been working on and have a mental block and can't get the darn solution. It's from Krauss's EM text Note: Assume non-relativistic motion. I'm assuming beam enters between places with d/2 on each...

Pipeline To Space? A carbon nano tube pipeline from the Equator to geo. orbit could pump massive amounts of H2 and O2 to space to be stored as rocket fuel. The pipeline would only have to be 1/4 inch diameter. http://www.newmars.com/cgi-bin/ikon...;f=5;t=198;st=0

This might seem like a chemistry question, but the principle behind it is mainly physics. How does keeping the thistle tube below the acid level prevent gas from seeping through it in a acid and metal reaction? In case you are wondering the thistle tube is the tube with a bulb-like opening at...

In a Cathode Ray Tube, the deflection on the screen is 2.4cm when the accelerating voltage is 480V, and the deflecting voltage is 36V. What deflection will you see on the screen if the accelerating voltage is 960V and the deflecting voltage is 18V?

I'd like to put a valve (like the ones on tire tubes) that will connect to a bicycle pump onto a PVC tube (on the side, or at the end). Anyone know how I can do this? What fittings will I need? Thanks.

I was reading a physics book the other day that said that rain drops were inner tube shaped and they showed a picture my advanced phys teacher said that is false because they are tear drop shaped and if you probe it. ie look for its shape, vel, pos. you will alter it that is why it looks like a...

:biggrin: I don't quite understand that apparatus very much. A book said that the disk is at an antinode of motion for the vibrating rod but near a node for the vibrating air column. What does it mean? What can I form if I clamped the rod at the middle?

Here's my problem:- A horizontal tube has a T-junction with a vertical tube coming downwards into a container of liquid, at height h below the T-junction. Air is forced into the horizontal tube which causes a pressure difference which sucks the liquid up the vertical tube. What is the...

Acoustic Interferometer: Interference with the Quincke Tube. See here: http://www.mip.berkeley.edu/physics/B+35+05.html The diagram and physics suggests that acoustic interference is achieved through this simple device. Makes sense to me. However, with the potential for destructive...

Help ASAP --- Missing Step --- Gas in a Tube I am dealing with finding normal modes of oscillations in a continuum I have no problems with the string example, but now I have a gas in a tube, one side of the gas has pressure= p_0 and the other side p_0+delta p, they're separated by a wall...

The electron gun in a televeision tube is used to accelerate electrons (mass of 9.10939 x 10^-31 kg and charge of -1.60218 x 10^-19 C) from rest to 2 x 10^7 m/s within a distance of .053 m. What electric field is required?

See the picture. 1 atm = 101300 Pa = 101300 N/m2 density of water = 1000 kg/m3 The tube is filled with water. A1 = 0.05m^2 and A2 = 0.08m^2. Two pistons apply different forces to the water in the tube so that the water in the right side of the tube is a height h = 0.43m above the height...

in which I could fit about a 3" diameter object in. I have searched and searched all over the net and I can't find any. I would like to purchase a vacuum tube so that I could do several experiments on what happens to household objects in a vaccum. I would like to see how ice changes in it among...

The Hilsch tube is not often mentioned anymore. It is a T-shaped arrangement of three tubes. A gas is led in through the stem of the T. Vanes inside use centrifugal force to direct the faster moving molecules to one side, where the exit tube is bigger, and the slower ones to the thinner tube...

Say you have a 3 inchs diameter tube and u have a machine that sucks air from it with force A. Then you have 2 tubes that is binded together each with a 1.5 inch diameter and have the same machine sucks air from it with force A also. Would the air velocity of the 3 inchs tube be slower...

Heres the problem: An x-ray tube used for cancer therapy operates at 4.0 MV, with a beam current of 25 mA striking the metal target.Nearly all of this power is transferred to a stream of water flowing through the holes drilled in the target. What rate of flow, in Kg/sec, is needed if the...