Mechanical Engineering

i guess your buying a BMW.

brushed aluminum is basically an aluminum that is brushed to make it smooth.

abraded is like a snake skin but not a snake!!

The fuel sample in the open cup is exposed to air,thereby decreasing it's vapor pressure when compared to the same in a closed cup.

Wood has relatively low tensile strength - about 7 MPa (6000 psi) compared to say steel which is 70MPa (60,000 psi) or more.However, wood has a higher strength to weight ratio than most other materials since it has such low density.

Use a magnet. Magnets stick to steel but don't stick to aluminum. Stainless is very weakly magnetic at best. Best to identify aluminum from stainless by weight (aluminum is much lighter) or by hardness (aluminum is much softer; scratches more easily).

***************** Though magnet test can show the difference between magnetic steel and aluminum, it cannot show the difference between non-magnetic steel and aluminum. In this case you can tell the difference by 1. weight , since aluminum has density 2700 kg/m3 and steel (magnetic or not) 7500 2. hardness, using a knife or something similar, since aluminum is softer than steel

In the laparoscopy procedure, the abdomen is filled with carbon dioxide gas so that the abdominal wall balloons away from the uterus and tubes. The surgeon makes a small cut just below the navel and inserts a laparoscope, a small telescope-like instrument. A second incision is made just above the pubic hairline to allow the entrance of the instrument that will cut, sew or burn the tubes. The surgery takes about half an hour. The lazer procedure is a minor operation (often called "Band-Aid" surgery). The procedure is usually done as an out patient in a hospital. It usually takes about 20-30 minutes for the entire procedure. It is made up of two parts: getting to the tubes and then cauterizing (burning) or cutting them to block their ability to allow sperm and egg to pass. ==New Answer== I don't know who replied to this question but they didn't state all the ways that the tubes can be "tied". In December of 2005 I had my tubes "tied" by laproscopy and the OB did it with a band basically like a rubber band that they "tie" around a section of both my tubes. I am currently 23yrs old and have a 9month old son and have missed 2 periods and showing signs of being pregnant (but waiting a lil longer before I take a test). The risk of getting pregnant is a lot higher then anyone thinks after getting a tubal especially if you have previous health problems like I do with having ENDOMETRIOSIS! Also 99.9% of OBs don't tell their patients the risks involved in getting your tubes tied that in can actually increase your risk of ovarian cancer (depending on how they were tied) and of course the risk of getting pregnant and having an ectopic pregnancy. I had my tubes tied after having pre-eclampsia that went into HELLP syndrome with my son and almost died when I had him. There was no other choice for me. I thought after I had him that was it no more kids, if I did get pregnant it would surely kill me next time and look at me now. My husband and I don't know how we can afford another baby but if I am pregnant then we will be happy but terrified as well. For any woman that gets pregnant after having her tubes tied she can go back and file a "wrongful life or wrongful death" lawsuit on the doctor that did it if they want to. I think all women should know that.

Prandtl number is dimensionless number, denoted by Npr.Npr = Cp (viscosity)/(thermal conductivity)

Cp - specific heat, J per ( Kg Kelvin)

viscosity in poise (gm per( cm sec))

thermal conductivity in Watt per (meter kelvin)

Prandtl number is important in heat transfer.

it hangs the bridge

cutting speed (Vc)= (Pi x D x N)/12 = (pi x 3.5 x 55)/12 = 50.39 feet/min.

You're in the class to learn this not to put it on wikianswers...

Yes, it is possible , however it depends on the type of joint you are trying to weld, and how structural you need it to be . Generally the low amperage of these machines lack the penetration needed for thicker metals. But with proper joint preparation IE. beveling the edges, and using flux core wire , along with multiple passes , you could achieve a good weld. Also it should be noted that these machines have a low duty cycle , meaning that, in order to weld thicker metals the machine must be used at it's highest settings , effectively shortening the amount of time you have to make a certain length of weld, which in this case is short. Usually a 20% duty cycle means at it's high settings , you can only weld 2 mins. out of every 10 mins, this is to avoid overheating the machine.

Since the energy stored elastically by an object is represented by E = 0.5kx^2 a simple calculation can be done to see how much energy is being stored by your slingshot on any given pull: The x value represents the distortion in meters (ie. the difference between the length of the band when it is in its resting state, and its length when it is being pulled). The k value is the elastic constant for the surgical tubing. This value can be looked up in a chart or table, or can be calculated experimentally (with the use of the equation: F = kx, again where k and x represent the elastic constant, and deformation, respectively). Once you have your values, simply substitute them into the equation and solve. The calculated energy stored, will have its units in Joules (J).

There is no difference ,both are same

tintu puthur joseph

Types of enclosures are as follows:-

1)open type enclosure-(it is open from both the ends)

2)protected type enclosure-(not completely open from both the ends)

3)drip proof type enclosure-(does not allow liquid or moisture to enter)

4)totally enclosed enclosure-(does not allow foreign particles to enter)

5)pipe ventilated enclosure-(used for providing ventilation for motor)

6)flame proof enclosure-(used when motor is to be used in explosive atmosphere)

Plies are the construction materials use to make a tire. The body ply is a sheet consisting of one layer of rubber, one layer of reinforcing fabric, and a second layer of rubber. The earliest textile used was cotton; later materials include rayon, nylon, polyester, and kevlar. Passenger tires typically have one or two body plies. They can also be reinforced with steel. Body plies give the tire structure strength. Truck tires, off-road tires, and aircraft tires have progressively more plies. The fabric cords are highly flexible but relatively inelastic.

No

the hottest point of the jet engine is the combustion chamber

So, the main purpose of an insulator is to isolate the current from being ground anywhere before the circuit completion. These insulators are essential for safety and they prevent direct contact from live wires.

My next guess, in this form of troubleshooting, would be a wiring harness problem / fuse problem / pass through or plug problem. IE The computer is telling something to work, but the signal is not getting to the right place.

Yes... typically killed carbon steel is used. However, you will need to watch out that your lean amine system is not too lean. You want a level of H2S in there that will allow a protective layer of iron sulfide to lay out in the piping and not be removed. If the lean amine loadings are too low in H2S content, that layer can be removed and it will no longer be protected. In this case be watchful of higher velocity areas. Example: small bore piping, reducers, tees, elbows... pay attention to the flow directions and check your areas of "impingement" with Ultrasonic thickness measurements or profile radiography.

You multiply the number of welds by the diameter of the pipe that those welds are applicable to.

MY question is (WHAT IS DOWNHILL WELDING)

The correct term is Down Hand Welding. Most welds in the vertical position are made from bottom to top. Down Hand means welding from the top to bottom. These welds are usually made on thin metal as the heat input is lower, thereby reducing penetration/burn thru.

When I use to live up North in Canada (-45 below) we would put "Red Devil" into the pipes before leaving to go on holidays. This stops the pipes from freezing. When we got back to the trailer we would flush out the pipes by leave faucets running for approx. a 1/2 hour. I now live in B.C. and although fairly warm winters we have had a few nasty ones (just had a cold winter) and I take a hair dryer and heat the pipe up. Also if you let hot water from a kettle run through (a little at a time) it loosens things up.

The lowest head loss is from a venturi since it has the lowest coefficient of discharge. typical coefficients range from 0.95-0.99 where the higher coefficient is directly proportional to larger square root of Reynolds number.

If the concrete sample has been tested in a uniaxial compressive test machine (which would be the normal destructive method of testing a cylindrical sample), then you would use the failure load divided by the cross sectional area of the cylinder to find the strength of the material.

Failure Stress = Uniaxial Compressive Strength = Force / Area

It should also be noted that concrete strength is more normally found by measuring "cube strength", that is where the concrete is pored into cube shaped moulds of 100 mm x 100 mm x 100 mm and is then allowed to cure for a period of time (typically 28 days). The concrete cube is then tested in a uniaxial test rig. The formula for calculating the strength is the same, however the major difference is in the preparation of the sample as described above.