Engineering

The lifetime of a steam-powered turbine is approximately fifty years. However, it generally depends on the upkeep and maintenance put into the turbine to keep it working.

because to fine out up and down valu.

An axial flow pump operates centrifugally in design. The fluid is pushed outward from the center or axis of the pump.

you go to a docter and say "i want a fake hand"

The first submarine was about 46 feet in length and assembled in Barcelona, Spain. The first successful launch of this submarine was in 1864 and held a crew of two people.

Controllable Variables are: utilization, work force level, production resource employment, and production lot size/sequencing of production runs. The major costs include: equipment installment, production & setup and inventory holding/processing.

You can use "Board Drawing" from http://drawing-tools.110mb.com/

Some of the emerging trends in engineering include nanotechnology and hybrid transportation. There is a push to make cars more fuel efficient and environment friendly by developing cars that use bio-fuels, electricity and solar.

around 50, 60, or 70 hours a week.

Mrs.Frisby and the Rats of Nimh is a book wrote by an author named Robert C. O'Brien who lived from 1918 -1973. If you want to know what the story is about, then go to Google and type in "What happened in the story Mrs. Frisby and the Rats of Nimh" or type in "Summary for Mrs. Frisby and the Rats of Nimh

I think you mean beam W30x150; where 30 is the nominal depth in inches, and 150 is the weight in pounds per linear foot. To answer the question about the compression strength, it is all relative to the type of steel, the length of the structural member, and how it is fixed at either end. Is it A-36 or A-50 steel; is it 10 ft. long, or 20 ft. long; is it pinned (bolted) or fixed (welded)? These unknown variables must be addressed before this theoretical value can be calculated.

Gabions are used everywhere these days even small firms like the ones I mentioned below are involved in gabions. The best place to see them is normally on motorways. Then they are often used in streams etc basically anywhere where you need to stop earth moving. Nowadays you can often find gabions in shopping precincts and supermarket car parks.

for computers not sure .. for pumps it means gallons per minute ..

general cargo ships

cars are made of a plastic based tin/copper material

The child process is initially running its parent' s program, with its parent' s virtual memory, file descriptors, and so on copied.The child process can modify its memory, close file descriptors, and the like without affecting its parent, and vice versa.

When a program creates another thread, though, nothing is copied.The creating and the created thread share the same memory space, file descriptors, and other system resources as the original. If one thread changes the value of a variable, for instance, the other thread subsequently will see the modified value. Similarly, if one thread closes a file descriptor, other threads may not read from or write to that file descriptor.

none if the source is purely violet and the filter is 100% red.

A negative rack angle leads to downward pressure that results in compression waves appear in front of the cutting instrument. It takes great pressure to avoid the cutting implement's blade rising up on those waves.

Yes it is. I received one in December with a 3.935 GPA.

Cryogenic hardening is often referred to cryogenic treatment and cryogenic processing. Using the term "hardening" is not correct. Cryogenic treatment does not increase the hardness of metals (I.E. rockwell hardness).

Rather it changes metals on the molecular level so that they perform better. Cryogenic treatment is used for a variety of reasons including improving dimensional stability, stress relieving, increasing wear resistance, and eliminating walk and creep.

A typical cryogenic treatment lasts for several days. Metal and steel parts will be put in a cryogenic processor at room temperature. The temperature will slowly be taken down to -300F below. Then it will hold there for 12 to 24 hours depending on the company doing the treatment. After that, the processor will have the temperature raised back to room temperature very slowly. Finally, the parts will be post-tempered to finalize the cryogenic treatment.

Cryogenic treatment re-aligns the micro-structure of the metal to improve its structural stability. Retained austenite will be converted to martensite which allows for a tougher piece of metal. The eta-carbides in the metal will become precipitated which allows for a much higher degree of wear resistance.

Below are some good sites for additional reference...

As far as I know there is not. But for most purposes you can use the sum sign instead: ∑

the major classes of materials

For fastening together two pieces of material.

Stress is the amount of force per unit area (N/mm2; lb/ft2)

Strain is the unitless change in length resulting from the application of a force (movement in unit length / original unit length)

Young's Modulus relates the two (stress / strain)

It really depends on what sub-discipline you choose to go into. For certain topics in EE, like microelectronics, or communications, there won't be a whole lot of correlation. For something like Power Systems, or Controls, you might see a little more.

For example, in controls, you may need to make an electronic control system for a mechanical device. In power systems, a good working background in mechanics may help if you get into the generation side.