When a chlorine cylinder has a leak, due to plug failure or pucture,WHY roll cylinder so that leak is at top?
115666
That would lower the pressure slightly\nliquid comes out the bottom\nwhereas gas would come out the top\nmeaning it would leak more slowly\nI wouldn't be around long though\nThe phase change from l to g being inside the cylinder, with pinhole and vapor on top, and outside the cylinder with pinhole and liquid on bottom, might serve to lower the temperature through evaporative cooling and therefore the pressure would drop slightly.
494151
It's bernoulli's principle. Fluids have a lower pressure when moving than when still. Since the water is moving past the spoons (which act like the wing of a plane) they feel a pull from the pressure drop and come together. Try it with a peice of paper sometime. Roll a piec of paper up so when you place it on a flat surface it looks like a curved bridge. then blow under it and it will collapse instead of blow away. It's pretty neet.
360965
the "L" indicates a twist-lock recptacle that prevents the cord from being kicked out. MIKE
866214
First, is the tank a coded vessel? If it is, you will have to follow the code's procedure. If it is not, will failure result in any catastrophic damage? If not, you can fill the tank and see if it leaks. Outside that, you'd have to see the particular installation and determine a safe test method.
656252
It is because the round or circular shape is the most uniform shape of all (there are no edges or corners) - this means the amount of stress force exerted from the surrounding soil is uniformly distributed onto it; wheareas if it was some other shape with corners or edges, then stress concentration would be higher at those places, which would cause cracks/erosion that can destroy the pothole.
259804
You have a beaker with an outlet for a rubber hose that is connected to the side running water outlet. On top of the beaker you have a funnel with a piece of filter paper in it. The running water creates a slight vacuum in the beaker. According to the Ideal Gas Law, the pressure in the beaker is lower than that outside of the beaker, causing it to suck in some air in order to equalize the pressure.Now, when you put in a liquid containing solids, the liquid will get sucked through the filter paper, leaving you with the solid. Vacuum Filtration is sometimes used instead of normal filtration because of its better filtration.( Normal filtration uses gravity instead of a vacuum)
342237
Basic Problem Solving technique.\nTo identify the real cause or root of a problem. For the engineer to understand this will allow him/her to improve the design.\n\ni.e. A car stops producing heat for the occupant. After checking the coolant supply which heats the heater core which air is blown across it is determined there is no coolant moving into the core. Further discovery the control valve is not working. One would stop here and just replace the valve. The engineer continues to research the problem with the vacuum driven diaphram to determine there is debris obstructing its movement. Why, because the valve is exposed to the rain/snow/salt (root cause) from the road. A new design helps to protect the valve from such common elements.
972325
It sounds like one of two things, either the line isn't tightly secured to the spool and it's all just spinning around the spool or the drag is set so lightly that the spool is just spinning around.\n\nEither set your drag correctly or re-spool your line. \n\n(If you got the reel used, this would be a good time to buy some new line and spool it up instead of re-spooling the old line.)\n\nSee links below for info on setting up your reel, including such topics as knots, line, and drag.
1181391
if you statically charge some sort of object, a glass rod works very well, by rubbing it on material in one direction only then hold it next to a stream of water the water should be repelled and bend away from it.
580303
I hope this answers your question. Most inflatable toys, mattresses, and mostly anything else inflatable comes with a kit to repair leaks. There are a few things that you can buy. There is something that should do the job at http://www.shipstore.com/SS/HTML/MRC/MRC59098.html . Also, at  http://www.sevylor.com/repair_center.html there is something that will fix a leak. Do you know where the leak is?
285124
Because someone spilled something on it.
266278
Oh yeah. Shape is everything. A sphere is the perfect shape for holding pressure. But the reason we dont see many spheres holding pressure is that they are also inconvenient in shape, so we have the next best thing - cylinders. LGP tanks, oxy tanks, scuba cylinders etc. Round sides even out the pressure, thats why you dont see square tanks. Also remember that when they test a tank for how well they hold pressure they fill it with water and pressurise the water, if you did this with just air, it will explode when the pressure gets too high. Thats called a hydraulic pressure test and it is marked on all pressure vessels. There is a test pressure and safe working pressure stamped in to all tanks.
272365
You have a leak in the brake system. Check fluid level, if low check lines near each wheel. Next you will have to pull a wheel off to see if the caliper (front) or cylinder (back) brakes are leaking.\n\nA rear drum brake cylinder can leak and the fluid can be absorbed in to the brake shoe with out leaving evidence on the ground.\n\nAlso, possible air or water in the line which means the brake fluid is contaminated. A complete purge of the system is required. Bleeding the fluid from each wheel as you feed fresh new fluid in.
581777
It has to be kept horizontally because the acetylene cylinder has a matrix in which the gas is sort of impregnated into. When you open the pressure valve it seeps out of it. My welding instructor also told us not to exceed 15 pounds because it could explode. I don't know if this is actually true or not, but have never exceeded his recommendation.
1111034
Perhaps the link will help a little.  If you bend a pipe or metal bar, some of the metal will be in tension (stretched) and some will be in compression (squeezed).  There is a neutral plane between the two conditions that is neither stretched nor squeezed.  Often the plane passes through the centroid of the pipe (or bar).  This is easy to find if the cross-section is regular (round, square, etc.) but more difficult to find if the area is irregular or of variable properties such as density.  The centroid is similar to the center of gravity for the shape.  Hope that helps a little.
44049
GAUGE SNUBBERS\n\nThe irregularity of impulses applied to the fluid power system by some pumps or air compressors causes the gauge pointer to oscillate violently. This makes reading of the gauge not only difficult but often impossible. Pressure oscillations and other sudden pressure changes existing in fluid power systems will also affect the delicate internal mechanism of gauges and cause either damage to or complete destruction of the gauge. A pressure gauge snubber is therefore installed in the line that leads to the pressure gauge.\n\nThe purpose of the snubber is to dampen the oscillations and thus provide a steady reading and protection for the gauge. The basic components of a snubber are the housing, fitting assembly with a fixed orifice diameter, and a pin and plunger assembly (fig. 8-16). The snubbing action is obtained by metering fluid through the snubber. The fitting assembly orifice restricts the amount of fluid that flows to the gauge, thereby snubbing the force of a pressure surge. The pin is pushed and pulled through the orifice of the fitting assembly by the plunger, keeping it clean and at a uniform size.
683520
It is the machine design. A vacuum is used to form the can that initially forms the bottom and sides. When the top is added it crimps the top by a tool that rolls the metal.